Abstract
NASA’s OSIRIS-REx asteroid sample return mission spacecraft includes the Touch And Go Camera System (TAGCAMS) three camera-head instrument. The purpose of TAGCAMS is to provide imagery during the mission to facilitate navigation to the target asteroid, confirm acquisition of the asteroid sample, and document asteroid sample stowage. The cameras were designed and constructed by Malin Space Science Systems (MSSS) based on requirements developed by Lockheed Martin and NASA. All three of the cameras are mounted to the spacecraft nadir deck and provide images in the visible part of the spectrum, 400–700 nm. Two of the TAGCAMS cameras, NavCam 1 and NavCam 2, serve as fully redundant navigation cameras to support optical navigation and natural feature tracking. Their boresights are aligned in the nadir direction with small angular offsets for operational convenience. The third TAGCAMS camera, StowCam, provides imagery to assist with and confirm proper stowage of the asteroid sample. Its boresight is pointed at the OSIRIS-REx sample return capsule located on the spacecraft deck. All three cameras have at their heart a \(2592 \times 1944~\mbox{pixel}\) complementary metal oxide semiconductor (CMOS) detector array that provides up to 12-bit pixel depth. All cameras also share the same lens design and a camera field of view of roughly \(44^{\circ} \times 32^{\circ}\) with a pixel scale of 0.28 mrad/pixel. The StowCam lens is focused to image features on the spacecraft deck, while both NavCam lens focus positions are optimized for imaging at infinity. A brief description of the TAGCAMS instrument and how it is used to support critical OSIRIS-REx operations is provided.
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Abbreviations
- ADC:
-
analog to digital converter
- CCTM:
-
Camera Calibration Toolbox for Matlab
- CM:
-
center of mass
- CMOS:
-
complementary metal oxide semiconductor
- DN:
-
digital number
- DTM:
-
digital terrain map
- DVR:
-
digital video recorder
- EM:
-
engineering model
- EMC:
-
electromagnetic compatibility
- EMI:
-
electromagnetic interference
- EPROMS:
-
erasable programmable read-only memory
- FDS:
-
flight dynamics system
- FITS:
-
Flexible Image Transport System
- FPGA:
-
field programmable gate array
- GDS:
-
ground data system
- KXIMP:
-
KinetX Star-Based Image Processing Suite
- LED:
-
light-emitting diode
- LIDAR:
-
light detection and ranging
- LVDS:
-
low voltage differential signaling
- MFOV:
-
medium field of view
- MSA:
-
mission support area
- MSSS:
-
Malin Space Science Systems
- MTF:
-
modulation transfer function
- NFT:
-
natural feature tracking
- OCAMS:
-
OSIRIS-REx camera suite
- OD:
-
orbit determination
- ODM:
-
orbit departure maneuver
- OpNav:
-
optical navigation
- OSIRIS-REx:
-
Origins Spectral Interpretation Resource Identification Security Regolith Explorer
- PDS:
-
Planetary Data System
- QTH:
-
quartz-tungsten-halogen
- RAL:
-
Reverberant Acoustics Laboratory
- SNR:
-
signal-to-noise ratio
- SOSC:
-
Space Operations Simulation Center
- SPOC:
-
science processing and operations center
- SRC:
-
sample return capsule
- SVT:
-
spacecraft verification tests
- TAG:
-
touch and go
- TAGCAMS:
-
Touch And Go Camera System
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This material is based upon work supported by NASA under Contracts NNM10AA11C, NNG12FD66C and NNG13FC02C issued through the New Frontiers Program. Copy editing and indexing provided by Mamassian Editorial Services.
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Bos, B.J., Ravine, M.A., Caplinger, M. et al. Touch And Go Camera System (TAGCAMS) for the OSIRIS-REx Asteroid Sample Return Mission. Space Sci Rev 214, 37 (2018). https://doi.org/10.1007/s11214-017-0465-2
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DOI: https://doi.org/10.1007/s11214-017-0465-2