Design
Specifications
Instrument System Properties
| System | Output |
| Mass | 32.92 kg (72.5 lbs) |
| Power (during operations) | 44.4-47.3 W |
| Power (during standby ) | 16.1 W |
Key Performance Characteristics:
| Device | Performance |
| Aperture | 100 millimeters |
| Field of View | 37 milliradians (about 2.06 degrees) |
| Spectral Range | VNIR: 362-1053 nanometers* IR: 1002-3920 nanometers** |
| Swath Width | 11.1 kilometers at 300 kilometer altitude |
| Pointing | +/- 60 degrees along the spacecraft ground track† |
| Focal Length | 441 millimeters (13.4 inches) |
| Instantaneous FOV (Pixel Angular Size) | 61.5 microradians (0.0035 degrees) |
| Spectral Sampling | 6.55 nanometer/channel |
| Spatial Sampling | 18.4 meter/pixel at 300 kilometer altitude |
*Above are CRISM’s full VNIR spectral ranges but the ranges that are most often used are 410-1020 nanometers
**Above are CRISM’s full IR spectral ranges but the ranges that are most often used are 1030-3920 nanometers
†During MRO’s extended mission (2010) CRISM’s gimbal started to show signs of age. The gimbal ran into “sticky spots” on its track making it difficult to reach its full pointing capabilities. Fearing CRISM would get stuck in that position, the team decided to change the along track positioning to between -60 and +30 degrees. Another sticky spot was found in 2012 and the along track positioning was again changed to between -1 and +30 degrees.
