| Detector format | 1024 x 1024 |
| Detector material | HgCdTe |
| Spectral range | 0.75 - 2.40 µm for imaging mode
1.10 - 1.80 µm for spectroscopic mode |
| Plate scale | 0.211 +/- 0.001''/pixel |
| Total field of view | 3.6' x 3.6' |
| Operating temperature | 77 K |
| Readout noise |
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| Dark current | 0.02 e-/sec |
| Full well capacity | 55 000 ADU/110.000 e- |
| Linearity (1%) | 40 000 ADU/80.000 e- |
| Mean quantum efficiency (detector only) |
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| Minimum integration time | 0.1 sec |
| Maximum integration time | 1 hour (not recommanded) |
| Readout time (full frame) | 0.5 second (fast read) to 2s (slow read) |
Orientation: North is up and East is right, within about 1 degree. The exact orientation varies slightly from one setup of the instrument to the next one, so for a more accurate measurement ask your SA who may have determined this value during setup, or can otherwise suggest an astrometric calibration field that you can briefly observe.
Subraster: any size is allowed, as long as the number of pixels is a power of two, anywhere within one of the 4 quadrants.
The center of the focal plane array is the intersection of the 4 individual chips that make up the whole detector. It often shows residual low level artefacts, and we therefore recommand that you move your source slightly off center.
Orientation: North up, East right within 1 degree for a Cassegrain Bonnette angle of zero.
Distortions: < 0.3% for the whole field.
Internal flexure: TBD.
Filters: 16 positions, including one blank for dark exposures and one empty position in each of the two filter wheels.