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Hayes AG, Corlies P, Tate C, Barrington M, Bell JF, Maki JN, Caplinger M, Ravine M, Kinch KM, Herkenhoff K, Horgan B, Johnson J, Lemmon M, Paar G, Rice MS, Jensen E, Kubacki TM, Cloutis E, Deen R, Ehlmann BL, Lakdawalla E, Sullivan R, Winhold A, Parkinson A, Bailey Z, van Beek J, Caballo-Perucha P, Cisneros E, Dixon D, Donaldson C, Jensen OB, Kuik J, Lapo K, Magee A, Merusi M, Mollerup J, Scudder N, Seeger C, Stanish E, Starr M, Thompson M, Turenne N, Winchell K. Pre-Flight Calibration of the Mars 2020 Rover Mastcam Zoom (Mastcam-Z) Multispectral, Stereoscopic Imager. SPACE SCIENCE REVIEWS 2021; 217:29. [PMID: 33678912 PMCID: PMC7892537 DOI: 10.1007/s11214-021-00795-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 01/12/2021] [Indexed: 05/28/2023]
Abstract
UNLABELLED The NASA Perseverance rover Mast Camera Zoom (Mastcam-Z) system is a pair of zoomable, focusable, multi-spectral, and color charge-coupled device (CCD) cameras mounted on top of a 1.7 m Remote Sensing Mast, along with associated electronics and two calibration targets. The cameras contain identical optical assemblies that can range in focal length from 26 mm ( 25.5 ∘ × 19.1 ∘ FOV ) to 110 mm ( 6.2 ∘ × 4.2 ∘ FOV ) and will acquire data at pixel scales of 148-540 μm at a range of 2 m and 7.4-27 cm at 1 km. The cameras are mounted on the rover's mast with a stereo baseline of 24.3 ± 0.1 cm and a toe-in angle of 1.17 ± 0.03 ∘ (per camera). Each camera uses a Kodak KAI-2020 CCD with 1600 × 1200 active pixels and an 8 position filter wheel that contains an IR-cutoff filter for color imaging through the detectors' Bayer-pattern filters, a neutral density (ND) solar filter for imaging the sun, and 6 narrow-band geology filters (16 total filters). An associated Digital Electronics Assembly provides command data interfaces to the rover, 11-to-8 bit companding, and JPEG compression capabilities. Herein, we describe pre-flight calibration of the Mastcam-Z instrument and characterize its radiometric and geometric behavior. Between April 26 t h and May 9 t h , 2019, ∼45,000 images were acquired during stand-alone calibration at Malin Space Science Systems (MSSS) in San Diego, CA. Additional data were acquired during Assembly Test and Launch Operations (ATLO) at the Jet Propulsion Laboratory and Kennedy Space Center. Results of the radiometric calibration validate a 5% absolute radiometric accuracy when using camera state parameters investigated during testing. When observing using camera state parameters not interrogated during calibration (e.g., non-canonical zoom positions), we conservatively estimate the absolute uncertainty to be < 10 % . Image quality, measured via the amplitude of the Modulation Transfer Function (MTF) at Nyquist sampling (0.35 line pairs per pixel), shows MTF Nyquist = 0.26 - 0.50 across all zoom, focus, and filter positions, exceeding the > 0.2 design requirement. We discuss lessons learned from calibration and suggest tactical strategies that will optimize the quality of science data acquired during operation at Mars. While most results matched expectations, some surprises were discovered, such as a strong wavelength and temperature dependence on the radiometric coefficients and a scene-dependent dynamic component to the zero-exposure bias frames. Calibration results and derived accuracies were validated using a Geoboard target consisting of well-characterized geologic samples. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s11214-021-00795-x.
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Affiliation(s)
- Alexander G. Hayes
- Department of Astronomy, Cornell University, Ithaca, NY 14850 USA
- Cornell Center for Astrophysics and Planetary Science, Cornell University, Ithaca, NY 14850 USA
| | - P. Corlies
- Department of Astronomy, Cornell University, Ithaca, NY 14850 USA
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - C. Tate
- Department of Astronomy, Cornell University, Ithaca, NY 14850 USA
| | - M. Barrington
- Department of Astronomy, Cornell University, Ithaca, NY 14850 USA
| | - J. F. Bell
- School of Earth and Space Exploration, Arizona State University, Phoenix, AZ 85287 USA
| | - J. N. Maki
- Jet Propulsion Laboratory, Pasadena, CA 91109 USA
| | - M. Caplinger
- Malin Space Science Systems, San Diego, CA 92121 USA
| | - M. Ravine
- Malin Space Science Systems, San Diego, CA 92121 USA
| | - K. M. Kinch
- Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
| | - K. Herkenhoff
- USGS Astrogeology Science Center, 2255 N. Gemini Drive, Flagstaff, AZ 86001 USA
| | - B. Horgan
- Earth, Atmospheric, and Planetary Sciences Department, Purdue University, West Lafayette, IN 47907 USA
| | - J. Johnson
- Johns Hopkins Applied Physics Laboratory, Laurel, MD 20723 USA
| | - M. Lemmon
- Space Science Institute, 4765 Walnut St., Suite B, Boulder, CO 80301 USA
| | - G. Paar
- Joanneum Research Forschungsgesellschaft mbH, Steyrergasse 17, 8010 Graz, Austria
| | - M. S. Rice
- Geology Department, Western Washington University, Bellingham, WA 98225 USA
| | - E. Jensen
- Malin Space Science Systems, San Diego, CA 92121 USA
| | - T. M. Kubacki
- Malin Space Science Systems, San Diego, CA 92121 USA
| | - E. Cloutis
- Geography Department, University of Winnepeg, 515 Portage Ave, Winnipeg, MB R3B 2E9 Canada
| | - R. Deen
- Jet Propulsion Laboratory, Pasadena, CA 91109 USA
| | - B. L. Ehlmann
- Jet Propulsion Laboratory, Pasadena, CA 91109 USA
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91101 USA
| | - E. Lakdawalla
- The Planetary Society, 60 S Los Robles, Pasadena, CA 91101 USA
| | - R. Sullivan
- Cornell Center for Astrophysics and Planetary Science, Cornell University, Ithaca, NY 14850 USA
| | - A. Winhold
- School of Earth and Space Exploration, Arizona State University, Phoenix, AZ 85287 USA
| | - A. Parkinson
- Centre for Terrestrial and Planetary Exploration, University of Winnipeg, 515 Portage Ave, Winnipeg, MB R3B 2E9 Canada
| | - Z. Bailey
- Jet Propulsion Laboratory, Pasadena, CA 91109 USA
| | - J. van Beek
- Jet Propulsion Laboratory, Pasadena, CA 91109 USA
| | - P. Caballo-Perucha
- Joanneum Research Forschungsgesellschaft mbH, Steyrergasse 17, 8010 Graz, Austria
| | - E. Cisneros
- School of Earth and Space Exploration, Arizona State University, Phoenix, AZ 85287 USA
| | - D. Dixon
- Malin Space Science Systems, San Diego, CA 92121 USA
| | - C. Donaldson
- Malin Space Science Systems, San Diego, CA 92121 USA
| | - O. B. Jensen
- Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
| | - J. Kuik
- Centre for Terrestrial and Planetary Exploration, University of Winnipeg, 515 Portage Ave, Winnipeg, MB R3B 2E9 Canada
| | - K. Lapo
- Geology Department, Western Washington University, Bellingham, WA 98225 USA
| | - A. Magee
- Malin Space Science Systems, San Diego, CA 92121 USA
| | - M. Merusi
- Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
| | - J. Mollerup
- Geology Department, Western Washington University, Bellingham, WA 98225 USA
| | - N. Scudder
- Earth, Atmospheric, and Planetary Sciences Department, Purdue University, West Lafayette, IN 47907 USA
| | - C. Seeger
- Geology Department, Western Washington University, Bellingham, WA 98225 USA
| | - E. Stanish
- Centre for Terrestrial and Planetary Exploration, University of Winnipeg, 515 Portage Ave, Winnipeg, MB R3B 2E9 Canada
| | - M. Starr
- Malin Space Science Systems, San Diego, CA 92121 USA
| | - M. Thompson
- Jet Propulsion Laboratory, Pasadena, CA 91109 USA
| | - N. Turenne
- Centre for Terrestrial and Planetary Exploration, University of Winnipeg, 515 Portage Ave, Winnipeg, MB R3B 2E9 Canada
| | - K. Winchell
- Malin Space Science Systems, San Diego, CA 92121 USA
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Bell JF, Maki JN, Mehall GL, Ravine MA, Caplinger MA, Bailey ZJ, Brylow S, Schaffner JA, Kinch KM, Madsen MB, Winhold A, Hayes AG, Corlies P, Tate C, Barrington M, Cisneros E, Jensen E, Paris K, Crawford K, Rojas C, Mehall L, Joseph J, Proton JB, Cluff N, Deen RG, Betts B, Cloutis E, Coates AJ, Colaprete A, Edgett KS, Ehlmann BL, Fagents S, Grotzinger JP, Hardgrove C, Herkenhoff KE, Horgan B, Jaumann R, Johnson JR, Lemmon M, Paar G, Caballo-Perucha M, Gupta S, Traxler C, Preusker F, Rice MS, Robinson MS, Schmitz N, Sullivan R, Wolff MJ. The Mars 2020 Perseverance Rover Mast Camera Zoom (Mastcam-Z) Multispectral, Stereoscopic Imaging Investigation. SPACE SCIENCE REVIEWS 2021; 217:24. [PMID: 33612866 PMCID: PMC7883548 DOI: 10.1007/s11214-020-00755-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 09/25/2020] [Indexed: 05/16/2023]
Abstract
Mastcam-Z is a multispectral, stereoscopic imaging investigation on the Mars 2020 mission's Perseverance rover. Mastcam-Z consists of a pair of focusable, 4:1 zoomable cameras that provide broadband red/green/blue and narrowband 400-1000 nm color imaging with fields of view from 25.6° × 19.2° (26 mm focal length at 283 μrad/pixel) to 6.2° × 4.6° (110 mm focal length at 67.4 μrad/pixel). The cameras can resolve (≥ 5 pixels) ∼0.7 mm features at 2 m and ∼3.3 cm features at 100 m distance. Mastcam-Z shares significant heritage with the Mastcam instruments on the Mars Science Laboratory Curiosity rover. Each Mastcam-Z camera consists of zoom, focus, and filter wheel mechanisms and a 1648 × 1214 pixel charge-coupled device detector and electronics. The two Mastcam-Z cameras are mounted with a 24.4 cm stereo baseline and 2.3° total toe-in on a camera plate ∼2 m above the surface on the rover's Remote Sensing Mast, which provides azimuth and elevation actuation. A separate digital electronics assembly inside the rover provides power, data processing and storage, and the interface to the rover computer. Primary and secondary Mastcam-Z calibration targets mounted on the rover top deck enable tactical reflectance calibration. Mastcam-Z multispectral, stereo, and panoramic images will be used to provide detailed morphology, topography, and geologic context along the rover's traverse; constrain mineralogic, photometric, and physical properties of surface materials; monitor and characterize atmospheric and astronomical phenomena; and document the rover's sample extraction and caching locations. Mastcam-Z images will also provide key engineering information to support sample selection and other rover driving and tool/instrument operations decisions.
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Affiliation(s)
| | | | | | - M. A. Ravine
- Malin Space Science Systems, Inc., San Diego, CA USA
| | | | | | - S. Brylow
- Malin Space Science Systems, Inc., San Diego, CA USA
| | | | | | | | | | | | | | - C. Tate
- Cornell Univ., Ithaca, NY USA
| | | | | | - E. Jensen
- Malin Space Science Systems, Inc., San Diego, CA USA
| | - K. Paris
- Arizona State Univ., Tempe, AZ USA
| | | | - C. Rojas
- Arizona State Univ., Tempe, AZ USA
| | | | | | | | - N. Cluff
- Arizona State Univ., Tempe, AZ USA
| | | | - B. Betts
- The Planetary Society, Pasadena, CA USA
| | | | - A. J. Coates
- Mullard Space Science Laboratory, Univ. College, London, UK
| | - A. Colaprete
- NASA/Ames Research Center, Moffett Field, CA USA
| | - K. S. Edgett
- Malin Space Science Systems, Inc., San Diego, CA USA
| | - B. L. Ehlmann
- JPL/Caltech, Pasadena, CA USA
- Caltech, Pasadena, CA USA
| | | | | | | | | | | | - R. Jaumann
- Inst. of Geological Sciences, Free University Berlin, Berlin, Germany
| | | | - M. Lemmon
- Space Science Inst., Boulder, CO USA
| | - G. Paar
- Joanneum Research, Graz, Austria
| | | | | | | | - F. Preusker
- DLR/German Aerospace Center, Berlin, Germany
| | - M. S. Rice
- Western Washington Univ., Bellingham, WA USA
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Ruff SW, Campbell KA, Van Kranendonk MJ, Rice MS, Farmer JD. The Case for Ancient Hot Springs in Gusev Crater, Mars. ASTROBIOLOGY 2020; 20:475-499. [PMID: 31621375 PMCID: PMC7133449 DOI: 10.1089/ast.2019.2044] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 09/11/2019] [Indexed: 05/19/2023]
Abstract
The origin and age of opaline silica deposits discovered by the Spirit rover adjacent to the Home Plate feature in the Columbia Hills of Gusev crater remains debated, in part because of their proximity to sulfur-rich soils. Processes related to fumarolic activity and to hot springs and/or geysers are the leading candidates. Both processes are known to produce opaline silica on Earth, but with differences in composition, morphology, texture, and stratigraphy. Here, we incorporate new and existing observations of the Home Plate region with observations from field and laboratory work to address the competing hypotheses. The results, which include new evidence for a hot spring vent mound, demonstrate that a volcanic hydrothermal system manifesting both hot spring/geyser and fumarolic activity best explains the opaline silica rocks and proximal S-rich materials, respectively. The opaline silica rocks most likely are sinter deposits derived from hot spring activity. Stratigraphic evidence indicates that their deposition occurred before the emplacement of the volcaniclastic deposits comprising Home Plate and nearby ridges. Because sinter deposits throughout geologic history on Earth preserve evidence for microbial life, they are a key target in the search for ancient life on Mars.
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Affiliation(s)
- Steven W. Ruff
- School of Earth and Space Exploration, Arizona State University, Tempe, Arizona
- Address correspondence to: Steven W. Ruff, School of Earth and Space Exploration, Arizona State University, Mars Space Flight Facility, Moeur Building Room 131, Tempe, AZ 85287-6305
| | - Kathleen A. Campbell
- School of Environment and Te Ao Mārama—Centre for Fundamental Inquiry, The University of Auckland, Auckland, New Zealand
| | - Martin J. Van Kranendonk
- Australian Centre for Astrobiology, School of Biological, Earth and Environmental Sciences, University of New South Wales Sydney, Sydney, Australia
| | - Melissa S. Rice
- Department of Geology, Western Washington University, Bellingham, Washington
| | - Jack D. Farmer
- School of Earth and Space Exploration, Arizona State University, Tempe, Arizona
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Malin MC, Ravine MA, Caplinger MA, Tony Ghaemi F, Schaffner JA, Maki JN, Bell JF, Cameron JF, Dietrich WE, Edgett KS, Edwards LJ, Garvin JB, Hallet B, Herkenhoff KE, Heydari E, Kah LC, Lemmon MT, Minitti ME, Olson TS, Parker TJ, Rowland SK, Schieber J, Sletten R, Sullivan RJ, Sumner DY, Aileen Yingst R, Duston BM, McNair S, Jensen EH. The Mars Science Laboratory (MSL) Mast cameras and Descent imager: Investigation and instrument descriptions. EARTH AND SPACE SCIENCE (HOBOKEN, N.J.) 2017; 4:506-539. [PMID: 29098171 PMCID: PMC5652233 DOI: 10.1002/2016ea000252] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 04/18/2017] [Accepted: 06/08/2017] [Indexed: 05/13/2023]
Abstract
The Mars Science Laboratory Mast camera and Descent Imager investigations were designed, built, and operated by Malin Space Science Systems of San Diego, CA. They share common electronics and focal plane designs but have different optics. There are two Mastcams of dissimilar focal length. The Mastcam-34 has an f/8, 34 mm focal length lens, and the M-100 an f/10, 100 mm focal length lens. The M-34 field of view is about 20° × 15° with an instantaneous field of view (IFOV) of 218 μrad; the M-100 field of view (FOV) is 6.8° × 5.1° with an IFOV of 74 μrad. The M-34 can focus from 0.5 m to infinity, and the M-100 from ~1.6 m to infinity. All three cameras can acquire color images through a Bayer color filter array, and the Mastcams can also acquire images through seven science filters. Images are ≤1600 pixels wide by 1200 pixels tall. The Mastcams, mounted on the ~2 m tall Remote Sensing Mast, have a 360° azimuth and ~180° elevation field of regard. Mars Descent Imager is fixed-mounted to the bottom left front side of the rover at ~66 cm above the surface. Its fixed focus lens is in focus from ~2 m to infinity, but out of focus at 66 cm. The f/3 lens has a FOV of ~70° by 52° across and along the direction of motion, with an IFOV of 0.76 mrad. All cameras can acquire video at 4 frames/second for full frames or 720p HD at 6 fps. Images can be processed using lossy Joint Photographic Experts Group and predictive lossless compression.
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Affiliation(s)
| | | | | | | | | | - Justin N. Maki
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCaliforniaUSA
| | - James F. Bell
- School of Earth and Space ExplorationArizona State UniversityTempeArizonaUSA
| | | | - William E. Dietrich
- Department of Earth and Planetary ScienceUniversity of CaliforniaBerkeleyCaliforniaUSA
| | | | | | | | - Bernard Hallet
- Department of Earth and Space Sciences, College of the EnvironmentUniversity of WashingtonSeattleWashingtonUSA
| | | | - Ezat Heydari
- Department of Physics, Atmospheric Sciences, and GeoscienceJackson State UniversityJacksonMississippiUSA
| | - Linda C. Kah
- Department of Earth and Planetary SciencesUniversity of Tennessee, KnoxvilleKnoxvilleTennesseeUSA
| | - Mark T. Lemmon
- Department of Atmospheric SciencesTexas A&M UniversityCollege StationTexasUSA
| | | | | | - Timothy J. Parker
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCaliforniaUSA
| | - Scott K. Rowland
- Department of Geology and Geophysics, School of Ocean and Earth Science and TechnologyUniversity of Hawai'i at MānoaHonoluluHIUSA
| | - Juergen Schieber
- Department of Earth and Atmospheric SciencesIndiana University, BloomingtonBloomingtonIndianaUSA
| | - Ron Sletten
- Department of Earth and Space Sciences, College of the EnvironmentUniversity of WashingtonSeattleWashingtonUSA
| | | | - Dawn Y. Sumner
- Department of Earth and Planetary SciencesUniversity of CaliforniaDavisCaliforniaUSA
| | | | | | - Sean McNair
- Malin Space Science Systems, IncSan DiegoCaliforniaUSA
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Abstract
The scientific objectives of the ExoMars rover are designed to answer several key questions in the search for life on Mars. In particular, the unique subsurface drill will address some of these, such as the possible existence and stability of subsurface organics. PanCam will establish the surface geological and morphological context for the mission, working in collaboration with other context instruments. Here, we describe the PanCam scientific objectives in geology, atmospheric science, and 3-D vision. We discuss the design of PanCam, which includes a stereo pair of Wide Angle Cameras (WACs), each of which has an 11-position filter wheel and a High Resolution Camera (HRC) for high-resolution investigations of rock texture at a distance. The cameras and electronics are housed in an optical bench that provides the mechanical interface to the rover mast and a planetary protection barrier. The electronic interface is via the PanCam Interface Unit (PIU), and power conditioning is via a DC-DC converter. PanCam also includes a calibration target mounted on the rover deck for radiometric calibration, fiducial markers for geometric calibration, and a rover inspection mirror. Key Words: Mars—ExoMars—Instrumentation—Geology—Atmosphere—Exobiology—Context. Astrobiology 17, 511–541.
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Ruff SW, Farmer JD. Silica deposits on Mars with features resembling hot spring biosignatures at El Tatio in Chile. Nat Commun 2016; 7:13554. [PMID: 27853166 PMCID: PMC5473637 DOI: 10.1038/ncomms13554] [Citation(s) in RCA: 142] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 10/13/2016] [Indexed: 11/09/2022] Open
Abstract
The Mars rover Spirit encountered outcrops and regolith composed of opaline silica (amorphous SiO2·nH2O) in an ancient volcanic hydrothermal setting in Gusev crater. An origin via either fumarole-related acid-sulfate leaching or precipitation from hot spring fluids was suggested previously. However, the potential significance of the characteristic nodular and mm-scale digitate opaline silica structures was not recognized. Here we report remarkably similar features within active hot spring/geyser discharge channels at El Tatio in northern Chile, where halite-encrusted silica yields infrared spectra that are the best match yet to spectra from Spirit. Furthermore, we show that the nodular and digitate silica structures at El Tatio that most closely resemble those on Mars include complex sedimentary structures produced by a combination of biotic and abiotic processes. Although fully abiotic processes are not ruled out for the Martian silica structures, they satisfy an a priori definition of potential biosignatures.
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Affiliation(s)
- Steven W Ruff
- School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287-6305, USA
| | - Jack D Farmer
- School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287-6305, USA
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Kinch KM, Bell JF, Goetz W, Johnson JR, Joseph J, Madsen MB, Sohl-Dickstein J. Dust deposition on the decks of the Mars Exploration Rovers: 10 years of dust dynamics on the Panoramic Camera calibration targets. EARTH AND SPACE SCIENCE (HOBOKEN, N.J.) 2015; 2:144-172. [PMID: 27981072 PMCID: PMC5125412 DOI: 10.1002/2014ea000073] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 03/09/2015] [Accepted: 03/26/2015] [Indexed: 05/13/2023]
Abstract
The Panoramic Cameras on NASA's Mars Exploration Rovers have each returned more than 17,000 images of their calibration targets. In order to make optimal use of this data set for reflectance calibration, a correction must be made for the presence of air fall dust. Here we present an improved dust correction procedure based on a two-layer scattering model, and we present a dust reflectance spectrum derived from long-term trends in the data set. The dust on the calibration targets appears brighter than dusty areas of the Martian surface. We derive detailed histories of dust deposition and removal revealing two distinct environments: At the Spirit landing site, half the year is dominated by dust deposition, the other half by dust removal, usually in brief, sharp events. At the Opportunity landing site the Martian year has a semiannual dust cycle with dust removal happening gradually throughout two removal seasons each year. The highest observed optical depth of settled dust on the calibration target is 1.5 on Spirit and 1.1 on Opportunity (at 601 nm). We derive a general prediction for dust deposition rates of 0.004 ± 0.001 in units of surface optical depth deposited per sol (Martian solar day) per unit atmospheric optical depth. We expect this procedure to lead to improved reflectance-calibration of the Panoramic Camera data set. In addition, it is easily adapted to similar data sets from other missions in order to deliver improved reflectance calibration as well as data on dust reflectance properties and deposition and removal history.
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Affiliation(s)
- Kjartan M Kinch
- Niels Bohr Institute University of Copenhagen Copenhagen Denmark
| | - James F Bell
- School of Earth and Space Exploration Arizona State University Phoenix Arizona USA
| | - Walter Goetz
- Max Planck Institute for Solar System Research Göttingen Germany
| | - Jeffrey R Johnson
- Applied Physics Laboratory Johns Hopkins University Laurel Maryland USA
| | - Jonathan Joseph
- Department of Astronomy Cornell University Ithaca New York USA
| | - Morten Bo Madsen
- Niels Bohr Institute University of Copenhagen Copenhagen Denmark
| | - Jascha Sohl-Dickstein
- Neural Dynamics and Computation Laboratory Stanford University Stanford California USA
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Livengood TA, Deming LD, A'hearn MF, Charbonneau D, Hewagama T, Lisse CM, McFadden LA, Meadows VS, Robinson TD, Seager S, Wellnitz DD. Properties of an Earth-like planet orbiting a Sun-like star: Earth observed by the EPOXI mission. ASTROBIOLOGY 2011; 11:907-930. [PMID: 22077375 DOI: 10.1089/ast.2011.0614] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
NASA's EPOXI mission observed the disc-integrated Earth and Moon to test techniques for reconnoitering extrasolar terrestrial planets, using the Deep Impact flyby spacecraft to observe Earth at the beginning and end of Northern Hemisphere spring, 2008, from a range of ∼1/6 to 1/3 AU. These observations furnish high-precision and high-cadence empirical photometry and spectroscopy of Earth, suitable as "ground truth" for numerically simulating realistic observational scenarios for an Earth-like exoplanet with finite signal-to-noise ratio. Earth was observed at near-equatorial sub-spacecraft latitude on 18-19 March, 28-29 May, and 4-5 June (UT), in the range of 372-4540 nm wavelength with low visible resolving power (λ/Δλ=5-13) and moderate IR resolving power (λ/Δλ=215-730). Spectrophotometry in seven filters yields light curves at ∼372-948 nm filter-averaged wavelength, modulated by Earth's rotation with peak-to-peak amplitude of ≤20%. The spatially resolved Sun glint is a minor contributor to disc-integrated reflectance. Spectroscopy at 1100-4540 nm reveals gaseous water and carbon dioxide, with minor features of molecular oxygen, methane, and nitrous oxide. One-day changes in global cloud cover resulted in differences between the light curve beginning and end of ≤5%. The light curve of a lunar transit of Earth on 29 May is color-dependent due to the Moon's red spectrum partially occulting Earth's relatively blue spectrum. The "vegetation red edge" spectral contrast observed between two long-wavelength visible/near-IR bands is ambiguous, not clearly distinguishing between the verdant Earth diluted by cloud cover versus the desolate mineral regolith of the Moon. Spectrophotometry in at least one other comparison band at short wavelength is required to distinguish between Earth-like and Moon-like surfaces in reconnaissance observations. However, measurements at 850 nm alone, the high-reflectance side of the red edge, could be sufficient to establish periodicity in the light curve and deduce Earth's diurnal period and the existence of fixed surface units.
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Affiliation(s)
- Timothy A Livengood
- National Center for Earth and Space Science Education, Capitol Heights, Maryland, USA.
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9
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Ruff SW, Farmer JD, Calvin WM, Herkenhoff KE, Johnson JR, Morris RV, Rice MS, Arvidson RE, Bell JF, Christensen PR, Squyres SW. Characteristics, distribution, origin, and significance of opaline silica observed by the Spirit rover in Gusev crater, Mars. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010je003767] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hayes AG, Grotzinger JP, Edgar LA, Squyres SW, Watters WA, Sohl-Dickstein J. Reconstruction of eolian bed forms and paleocurrents from cross-bedded strata at Victoria Crater, Meridiani Planum, Mars. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010je003688] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chojnacki M, Burr DM, Moersch JE, Michaels TI. Orbital observations of contemporary dune activity in Endeavor crater, Meridiani Planum, Mars. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010je003675] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Wang A, Ling ZC. Ferric sulfates on Mars: A combined mission data analysis of salty soils at Gusev crater and laboratory experimental investigations. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010je003665] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Arvidson RE, Bell JF, Bellutta P, Cabrol NA, Catalano JG, Cohen J, Crumpler LS, Des Marais DJ, Estlin TA, Farrand WH, Gellert R, Grant JA, Greenberger RN, Guinness EA, Herkenhoff KE, Herman JA, Iagnemma KD, Johnson JR, Klingelhöfer G, Li R, Lichtenberg KA, Maxwell SA, Ming DW, Morris RV, Rice MS, Ruff SW, Shaw A, Siebach KL, de Souza PA, Stroupe AW, Squyres SW, Sullivan RJ, Talley KP, Townsend JA, Wang A, Wright JR, Yen AS. Spirit Mars Rover Mission: Overview and selected results from the northern Home Plate Winter Haven to the side of Scamander crater. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2010je003633] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Goetz W, Pike WT, Hviid SF, Madsen MB, Morris RV, Hecht MH, Staufer U, Leer K, Sykulska H, Hemmig E, Marshall J, Morookian JM, Parrat D, Vijendran S, Bos BJ, El Maarry MR, Keller HU, Kramm R, Markiewicz WJ, Drube L, Blaney D, Arvidson RE, Bell JF, Reynolds R, Smith PH, Woida P, Woida R, Tanner R. Microscopy analysis of soils at the Phoenix landing site, Mars: Classification of soil particles and description of their optical and magnetic properties. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009je003437] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Squyres SW, Knoll AH, Arvidson RE, Ashley JW, Bell JF, Calvin WM, Christensen PR, Clark BC, Cohen BA, de Souza PA, Edgar L, Farrand WH, Fleischer I, Gellert R, Golombek MP, Grant J, Grotzinger J, Hayes A, Herkenhoff KE, Johnson JR, Jolliff B, Klingelhöfer G, Knudson A, Li R, McCoy TJ, McLennan SM, Ming DW, Mittlefehldt DW, Morris RV, Rice JW, Schröder C, Sullivan RJ, Yen A, Yingst RA. Exploration of Victoria Crater by the Mars Rover Opportunity. Science 2009; 324:1058-61. [DOI: 10.1126/science.1170355] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- S. W. Squyres
- Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853, USA
| | - A. H. Knoll
- Botanical Museum, Harvard University, Cambridge, MA 02138, USA
| | - R. E. Arvidson
- Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63031, USA
| | - J. W. Ashley
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
| | - J. F. Bell
- Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853, USA
| | - W. M. Calvin
- University of Nevada, Reno, Geological Sciences, Reno, NV 89557, USA
| | - P. R. Christensen
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
| | - B. C. Clark
- Lockheed Martin Corporation, Littleton, CO 80127, USA
| | - B. A. Cohen
- National Aeronautics and Space Administration, Marshall Space Flight Center, Huntsville, AL 35812, USA
| | - P. A. de Souza
- Tasmanian Information and Communication Technologies Centre, Commonwealth Scientific and Industrial Research Organisation, Castray Esplanade, Hobart TAS 7000, Australia
| | - L. Edgar
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | | | - I. Fleischer
- Institut für Anorganische und Analytische Chemie, Johannes Gutenberg-Universität, Mainz, Germany
| | - R. Gellert
- Department of Physics, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - M. P. Golombek
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - J. Grant
- Center for Earth and Planetary Studies, Smithsonian Institution, Washington, DC 20560, USA
| | - J. Grotzinger
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | - A. Hayes
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | | | | | - B. Jolliff
- Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63031, USA
| | - G. Klingelhöfer
- Institut für Anorganische und Analytische Chemie, Johannes Gutenberg-Universität, Mainz, Germany
| | - A. Knudson
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
| | - R. Li
- Department of Civil and Environmental Engineering and Geodetic Science, Ohio State University, Columbus, OH 43210, USA
| | - T. J. McCoy
- Department of Mineral Sciences, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA
| | - S. M. McLennan
- Department of Geosciences, State University of New York, Stony Brook, NY 11794, USA
| | - D. W. Ming
- Astromaterials Research and Exploration Science, NASA Johnson Space Center, Houston, TX 77058, USA
| | - D. W. Mittlefehldt
- Astromaterials Research and Exploration Science, NASA Johnson Space Center, Houston, TX 77058, USA
| | - R. V. Morris
- Astromaterials Research and Exploration Science, NASA Johnson Space Center, Houston, TX 77058, USA
| | - J. W. Rice
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
| | - C. Schröder
- Institut für Anorganische und Analytische Chemie, Johannes Gutenberg-Universität, Mainz, Germany
| | - R. J. Sullivan
- Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853, USA
| | - A. Yen
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - R. A. Yingst
- Natural and Applied Sciences, University of Wisconsin Green Bay, Green Bay, WI 54311, USA
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Wang A, Bell JF, Li R, Johnson JR, Farrand WH, Cloutis EA, Arvidson RE, Crumpler L, Squyres SW, McLennan SM, Herkenhoff KE, Ruff SW, Knudson AT, Chen W, Greenberger R. Light-toned salty soils and coexisting Si-rich species discovered by the Mars Exploration Rover Spirit in Columbia Hills. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008je003126] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Calvin WM, Shoffner JD, Johnson JR, Knoll AH, Pocock JM, Squyres SW, Weitz CM, Arvidson RE, Bell JF, Christensen PR, de Souza PA, Farrand WH, Glotch TD, Herkenhoff KE, Jolliff BL, Knudson AT, McLennan SM, Rogers AD, Thompson SD. Hematite spherules at Meridiani: Results from MI, Mini-TES, and Pancam. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007je003048] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Herkenhoff KE, Grotzinger J, Knoll AH, McLennan SM, Weitz C, Yingst A, Anderson R, Archinal BA, Arvidson RE, Barrett JM, Becker KJ, Bell JF, Budney C, Chapman MG, Cook D, Ehlmann B, Franklin B, Gaddis LR, Galuszka DM, Garcia PA, Geissler P, Hare TM, Howington-Kraus E, Johnson JR, Keszthelyi L, Kirk RL, Lanagan P, Lee EM, Leff C, Maki JN, Mullins KF, Parker TJ, Redding BL, Rosiek MR, Sims MH, Soderblom LA, Spanovich N, Springer R, Squyres SW, Stolper D, Sucharski RM, Sucharski T, Sullivan R, Torson JM. Surface processes recorded by rocks and soils on Meridiani Planum, Mars: Microscopic Imager observations during Opportunity's first three extended missions. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008je003100] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bell JF, Rice MS, Johnson JR, Hare TM. Surface albedo observations at Gusev Crater and Meridiani Planum, Mars. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007je002976] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Goetz W, Leer K, Gunnlaugsson HP, Bartlett P, Basso B, Bell J, Bertelsen P, Binau CS, Chu PC, Gorevan S, Hansen MF, Hviid SF, Kinch KM, Klingelhöfer G, Kusack A, Madsen MB, Ming DW, Morris RV, Mumm E, Myrick T, Olsen M, Squyres SW, Wilson J, Yen A. Search for magnetic minerals in Martian rocks: Overview of the Rock Abrasion Tool (RAT) magnet investigation on Spirit and Opportunity. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2006je002819] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Knoll AH, Jolliff BL, Farrand WH, Bell III JF, Clark BC, Gellert R, Golombek MP, Grotzinger JP, Herkenhoff KE, Johnson JR, McLennan SM, Morris R, Squyres SW, Sullivan R, Tosca NJ, Yen A, Learner Z. Veneers, rinds, and fracture fills: Relatively late alteration of sedimentary rocks at Meridiani Planum, Mars. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007je002949] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Greeley R, Whelley PL, Neakrase LDV, Arvidson RE, Bridges NT, Cabrol NA, Christensen PR, Di K, Foley DJ, Golombek MP, Herkenhoff K, Knudson A, Kuzmin RO, Li R, Michaels T, Squyres SW, Sullivan R, Thompson SD. Columbia Hills, Mars: Aeolian features seen from the ground and orbit. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007je002971] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Lichtenberg KA, Arvidson RE, Poulet F, Morris RV, Knudson A, Bell JF, Bellucci G, Bibring JP, Farrand WH, Johnson JR, Ming DW, Pinet PC, Rogers AD, Squyres SW. Coordinated analyses of orbital and Spirit Rover data to characterize surface materials on the cratered plains of Gusev Crater, Mars. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006je002850] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Karunatillake S, Keller JM, Squyres SW, Boynton WV, Brückner J, Janes DM, Gasnault O, Newsom HE. Chemical compositions at Mars landing sites subject to Mars Odyssey Gamma Ray Spectrometer constraints. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006je002859] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - John M. Keller
- Physics Department; California Polytechnic State University; San Luis Obispo California USA
| | | | - William V. Boynton
- Lunar and Planetary Laboratory; University of Arizona; Tucson Arizona USA
| | | | - Daniel M. Janes
- Lunar and Planetary Laboratory; University of Arizona; Tucson Arizona USA
| | - Olivier Gasnault
- Centre d'Etude Spatiale des Rayonnements/Centre National de la Recherche Scientifique/Université Paul Sabatier Toulouse; Toulouse France
| | - Horton E. Newsom
- Institute of Meteoritics and Department of Earth and Planetary Sciences; University of New Mexico; Albuquerque New Mexico USA
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Farrand WH, Bell JF, Johnson JR, Jolliff BL, Knoll AH, McLennan SM, Squyres SW, Calvin WM, Grotzinger JP, Morris RV, Soderblom J, Thompson SD, Watters WA, Yen AS. Visible and near-infrared multispectral analysis of rocks at Meridiani Planum, Mars, by the Mars Exploration Rover Opportunity. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006je002773] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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26
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Kinch KM, Sohl-Dickstein J, Bell JF, Johnson JR, Goetz W, Landis GA. Dust deposition on the Mars Exploration Rover Panoramic Camera (Pancam) calibration targets. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006je002807] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Wolff MJ, Smith MD, Clancy RT, Spanovich N, Whitney BA, Lemmon MT, Bandfield JL, Banfield D, Ghosh A, Landis G, Christensen PR, Bell JF, Squyres SW. Constraints on dust aerosols from the Mars Exploration Rovers using MGS overflights and Mini-TES. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2006je002786] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- M. J. Wolff
- Space Science Institute; Boulder Colorado USA
| | - M. D. Smith
- Goddard Space Flight Center; Greenbelt Maryland USA
| | | | - N. Spanovich
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | | | - M. T. Lemmon
- Department of Atmospheric Sciences; Texas A&M University; College Station Texas USA
| | - J. L. Bandfield
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | - D. Banfield
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - A. Ghosh
- Department of Earth and Planetary Sciences; University of Tennessee; Knoxville Tennessee USA
| | - G. Landis
- Photovoltaics and Space Environment Branch; NASA John Glenn Research Center; Cleveland Ohio USA
| | - P. R. Christensen
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | - J. F. Bell
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - S. W. Squyres
- Department of Astronomy; Cornell University; Ithaca New York USA
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28
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Johnson JR, Grundy WM, Lemmon MT, Bell JF, Johnson MJ, Deen R, Arvidson RE, Farrand WH, Guinness E, Hayes AG, Herkenhoff KE, Seelos F, Soderblom J, Squyres S. Spectrophotometric properties of materials observed by Pancam on the Mars Exploration Rovers: 2. Opportunity. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2006je002762] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Mark T. Lemmon
- Department of Atmospheric Sciences; Texas A&M University; College Station Texas USA
| | - James F. Bell
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Miles J. Johnson
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Robert Deen
- Jet Propulsion Laboratory; Pasadena California USA
| | - R. E. Arvidson
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | | | - E. Guinness
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | - Alexander G. Hayes
- Lincoln Laboratory; Massachusetts Institute of Technology; Boston Massachusetts USA
| | - K. E. Herkenhoff
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | - F. Seelos
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - J. Soderblom
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - S. Squyres
- Department of Astronomy; Cornell University; Ithaca New York USA
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29
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Johnson JR, Sohl-Dickstein J, Grundy WM, Arvidson RE, Bell J, Christensen P, Graff T, Guinness EA, Kinch K, Morris R, Shepard MK. Radiative transfer modeling of dust-coated Pancam calibration target materials: Laboratory visible/near-infrared spectrogoniometry. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002658] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | | | - Raymond E. Arvidson
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | - James Bell
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Phil Christensen
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | - Trevor Graff
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | - Edward A. Guinness
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | - Kjartan Kinch
- Department of Astronomy; Cornell University; Ithaca New York USA
| | | | - Michael K. Shepard
- Department of Geography and Geosciences; Bloomsburg University; Bloomsburg Pennsylvania USA
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30
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Bell JF, Savransky D, Wolff MJ. Chromaticity of the Martian sky as observed by the Mars Exploration Rover Pancam instruments. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2006je002687] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J. F. Bell
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - D. Savransky
- Department of Astronomy; Cornell University; Ithaca New York USA
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Weitz CM, Anderson RC, Bell JF, Farrand WH, Herkenhoff KE, Johnson JR, Jolliff BL, Morris RV, Squyres SW, Sullivan RJ. Soil grain analyses at Meridiani Planum, Mars. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002541] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- C. M. Weitz
- Planetary Science Institute; Tucson Arizona USA
| | | | - J. F. Bell
- Department of Astronomy; Cornell University; Ithaca New York USA
| | | | | | | | - B. L. Jolliff
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | | | - S. W. Squyres
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - R. J. Sullivan
- Department of Astronomy; Cornell University; Ithaca New York USA
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32
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Herkenhoff KE, Squyres SW, Anderson R, Archinal BA, Arvidson RE, Barrett JM, Becker KJ, Bell JF, Budney C, Cabrol NA, Chapman MG, Cook D, Ehlmann BL, Farmer J, Franklin B, Gaddis LR, Galuszka DM, Garcia PA, Hare TM, Howington-Kraus E, Johnson JR, Johnson S, Kinch K, Kirk RL, Lee EM, Leff C, Lemmon M, Madsen MB, Maki JN, Mullins KF, Redding BL, Richter L, Rosiek MR, Sims MH, Soderblom LA, Spanovich N, Springer R, Sucharski RM, Sucharski T, Sullivan R, Torson JM, Yen A. Overview of the Microscopic Imager Investigation during Spirit's first 450 sols in Gusev crater. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002574] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Steve W. Squyres
- Department of Astronomy, Space Sciences Building; Cornell University; Ithaca New York USA
| | - Robert Anderson
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | | | - Raymond E. Arvidson
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | - Janet M. Barrett
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | - Kris J. Becker
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | - James F. Bell
- Department of Astronomy, Space Sciences Building; Cornell University; Ithaca New York USA
| | - Charles Budney
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | | | - Mary G. Chapman
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | - Debbie Cook
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | - Bethany L. Ehlmann
- Environmental Change Institute, Department of Geography and Environment; University of Oxford; Oxford UK
| | - Jack Farmer
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | - Brenda Franklin
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Lisa R. Gaddis
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | | | | | - Trent M. Hare
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | | | | | - Sarah Johnson
- Department of Earth, Atmospheric and Planetary Sciences; Massachusetts Institute of Technology; Cambridge Massachusetts USA
| | - Kjartan Kinch
- Department of Astronomy, Space Sciences Building; Cornell University; Ithaca New York USA
| | - Randolph L. Kirk
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | - Ella Mae Lee
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | - Craig Leff
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Mark Lemmon
- Department of Atmospheric Sciences; Texas A&M University; College Station Texas USA
| | - Morten B. Madsen
- Center for Planetary Science, Danish Space Research Institute and Niels Bohr Institute for Astronomy, Physics and Geophysics; University of Copenhagen; Copenhagen Denmark
| | - Justin N. Maki
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Kevin F. Mullins
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | | | - Lutz Richter
- DLR Institut für Raumsimulation; Cologne Germany
| | - Mark R. Rosiek
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | | | | | - Nicole Spanovich
- Lunar and Planetary Laboratory; University of Arizona; Tucson Arizona USA
| | - Richard Springer
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | | | - Tracie Sucharski
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | - Rob Sullivan
- Department of Astronomy, Space Sciences Building; Cornell University; Ithaca New York USA
| | - James M. Torson
- Astrogeology Team; U.S. Geological Survey; Flagstaff Arizona USA
| | - Albert Yen
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
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Fergason RL, Christensen PR, Bell JF, Golombek MP, Herkenhoff KE, Kieffer HH. Physical properties of the Mars Exploration Rover landing sites as inferred from Mini-TES-derived thermal inertia. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002583] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Robin L. Fergason
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | | | - James F. Bell
- Department of Astronomy, Space Science Building; Cornell University; Ithaca New York USA
| | - Matthew P. Golombek
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
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Johnson JR, Grundy WM, Lemmon MT, Bell JF, Johnson MJ, Deen RG, Arvidson RE, Farrand WH, Guinness EA, Hayes AG, Herkenhoff KE, Seelos F, Soderblom J, Squyres S. Spectrophotometric properties of materials observed by Pancam on the Mars Exploration Rovers: 1. Spirit. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002494] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Mark T. Lemmon
- Department of Atmospheric Sciences; Texas A&M University; College Station Texas USA
| | - James F. Bell
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Miles J. Johnson
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Robert G. Deen
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - Raymond E. Arvidson
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | | | - Edward A. Guinness
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | | | | | - Frank Seelos
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | - Jason Soderblom
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Steve Squyres
- Department of Astronomy; Cornell University; Ithaca New York USA
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35
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Gellert R, Rieder R, Brückner J, Clark BC, Dreibus G, Klingelhöfer G, Lugmair G, Ming DW, Wänke H, Yen A, Zipfel J, Squyres SW. Alpha Particle X-Ray Spectrometer (APXS): Results from Gusev crater and calibration report. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002555] [Citation(s) in RCA: 279] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- R. Gellert
- Max-Planck-Institut für Chemie; Mainz Germany
- Department of Physics; University of Guelph; Guelph, Ontario Canada
| | - R. Rieder
- Max-Planck-Institut für Chemie; Mainz Germany
| | - J. Brückner
- Max-Planck-Institut für Chemie; Mainz Germany
| | - B. C. Clark
- Lockheed Martin Corporation; Littleton Colorado USA
| | - G. Dreibus
- Max-Planck-Institut für Chemie; Mainz Germany
| | - G. Klingelhöfer
- Institut für Inorganische und Analytische Chemie; Johannes Gutenberg-Universität; Mainz Germany
| | - G. Lugmair
- Max-Planck-Institut für Chemie; Mainz Germany
| | - D. W. Ming
- NASA Johnson Space Center; Houston Texas USA
| | - H. Wänke
- Max-Planck-Institut für Chemie; Mainz Germany
| | - A. Yen
- Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
| | - J. Zipfel
- Max-Planck-Institut für Chemie; Mainz Germany
| | - S. W. Squyres
- Center for Radiophysics and Space Research; Cornell University; Ithaca New York USA
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Li R, Archinal BA, Arvidson RE, Bell J, Christensen P, Crumpler L, Des Marais DJ, Di K, Duxbury T, Golombek M, Grant J, Greeley R, Guinn J, Johnson A, Kirk RL, Maimone M, Matthies LH, Malin M, Parker T, Sims M, Thompson S, Squyres SW, Soderblom LA. Spirit rover localization and topographic mapping at the landing site of Gusev crater, Mars. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002483] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rongxing Li
- Department of Civil and Environmental Engineering and Geodetic Science; Ohio State University; Columbus Ohio USA
| | | | - Raymond E. Arvidson
- Department of Earth and Planetary Sciences; Washington University; St. Louis Missouri USA
| | - Jim Bell
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - Philip Christensen
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | - Larry Crumpler
- New Mexico Museum of Natural History and Science; Albuquerque New Mexico USA
| | | | - Kaichang Di
- Department of Civil and Environmental Engineering and Geodetic Science; Ohio State University; Columbus Ohio USA
| | - Tom Duxbury
- Jet Propulsion Laboratory; Pasadena California USA
| | | | - John Grant
- Smithsonian Institution; Washington, DC USA
| | - Ronald Greeley
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
| | - Joe Guinn
- Jet Propulsion Laboratory; Pasadena California USA
| | | | | | - Mark Maimone
- Jet Propulsion Laboratory; Pasadena California USA
| | | | - Mike Malin
- Malin Space Science Systems; San Diego California USA
| | - Tim Parker
- Jet Propulsion Laboratory; Pasadena California USA
| | - Mike Sims
- NASA Ames Research Center; Moffett Field California USA
| | - Shane Thompson
- Department of Geological Sciences; Arizona State University; Tempe Arizona USA
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Arvidson RE, Squyres SW, Anderson RC, Bell JF, Blaney D, Brückner J, Cabrol NA, Calvin WM, Carr MH, Christensen PR, Clark BC, Crumpler L, Des Marais DJ, de Souza PA, d'Uston C, Economou T, Farmer J, Farrand WH, Folkner W, Golombek M, Gorevan S, Grant JA, Greeley R, Grotzinger J, Guinness E, Hahn BC, Haskin L, Herkenhoff KE, Hurowitz JA, Hviid S, Johnson JR, Klingelhöfer G, Knoll AH, Landis G, Leff C, Lemmon M, Li R, Madsen MB, Malin MC, McLennan SM, McSween HY, Ming DW, Moersch J, Morris RV, Parker T, Rice JW, Richter L, Rieder R, Rodionov DS, Schröder C, Sims M, Smith M, Smith P, Soderblom LA, Sullivan R, Thompson SD, Tosca NJ, Wang A, Wänke H, Ward J, Wdowiak T, Wolff M, Yen A. Overview of the Spirit Mars Exploration Rover Mission to Gusev Crater: Landing site to Backstay Rock in the Columbia Hills. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002499] [Citation(s) in RCA: 202] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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38
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McSween HY, Wyatt MB, Gellert R, Bell JF, Morris RV, Herkenhoff KE, Crumpler LS, Milam KA, Stockstill KR, Tornabene LL, Arvidson RE, Bartlett P, Blaney D, Cabrol NA, Christensen PR, Clark BC, Crisp JA, Des Marais DJ, Economou T, Farmer JD, Farrand W, Ghosh A, Golombek M, Gorevan S, Greeley R, Hamilton VE, Johnson JR, Joliff BL, Klingelhöfer G, Knudson AT, McLennan S, Ming D, Moersch JE, Rieder R, Ruff SW, Schröder C, de Souza PA, Squyres SW, Wänke H, Wang A, Yen A, Zipfel J. Characterization and petrologic interpretation of olivine-rich basalts at Gusev Crater, Mars. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002477] [Citation(s) in RCA: 198] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Farrand WH, Bell JF, Johnson JR, Squyres SW, Soderblom J, Ming DW. Spectral variability among rocks in visible and near-infrared multispectral Pancam data collected at Gusev crater: Examinations using spectral mixture analysis and related techniques. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005je002495] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - J. F. Bell
- Department of Astronomy; Cornell University; Ithaca New York USA
| | | | - S. W. Squyres
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - J. Soderblom
- Department of Astronomy; Cornell University; Ithaca New York USA
| | - D. W. Ming
- NASA Johnson Space Flight Center; Houston Texas USA
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40
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McSween HY, Ruff SW, Morris RV, Bell JF, Herkenhoff K, Gellert R, Stockstill KR, Tornabene LL, Squyres SW, Crisp JA, Christensen PR, McCoy TJ, Mittlefehldt DW, Schmidt M. Alkaline volcanic rocks from the Columbia Hills, Gusev crater, Mars. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2006je002698] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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