Mars Perseverance Sol 181: SHERLOC ACI Camera
NASA's Mars Perseverance rover acquired this image using its SHERLOC Autofocus and Context Imager (ACI), located on the turret at the end of the rover's robotic arm.
This image was acquired on Aug. 24, 2021 (Sol 181) at the local mean solar time of 19:50:25.
Image Credit: NASA/JPL-Caltech
-interesting calibration image using (4) Intensity Target (Chromium on Silica)
Fun seeing the Sherlock Holmes 221B Baker Street reference in (6) Polycarbonate Over Opal Glass Geocache
.
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which it interacted. This enables classification of bonds such as C-H, CN, C=O, C=C,
NHx, NOx, SOx, POx, ClOx, and OH.
In addition to the two imaging subsystems and a DUV laser spectrometer, the Mars 2020
rover carries an external SHERLOC Calibration Target (SCT). The SCT is affixed to the
front of the rover and includes ten calibration targets to enable instrument calibration on
the Mars Surface.
Figure 1 captures the ten calibration targets and their location within the calibration target
palette.
Figure 1 SHERLOC Calibration Target (SCT)
The calibration target material is being identified as:
(0) NA
(1) AlGaN on Sapphire Raman Region (~262 nm peak)
(2) Diffusil Diffuser (Bubbled Silica)
(3) Mars Meteorite SaU 008
(4) Intensity Target (Chromium on Silica)
(5) AlGaN on Sapphire Fluorescence Region (~335 nm peak)
(6) Polycarbonate Over Opal Glass Geocache
(7) Vectran Fabric
(8) Orthofabric
(9) Teflon Fabric
(10) nGimat Coated Teflon Fabric
For detail descriptive information on the SCT and each of the targets, refer to Ref [13],
Ref [15], and Ref [18].
https://pds-geosciences.wustl.edu/m2020/urn-nasa-pds-mars2020_sherloc/document/sherloc_rdr_sis.pdf
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copyright 2021. California Institute of Technology. Government sponsorship acknowledged. The research was carried out
at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics
and Space Administration.
