Imager Specifications
- SBIG Research STL-11000M (made by the Santa Barbara Instruments Group)
- 4008×2762 pixels (Med. Res.: 2004×1381, Low Res.:1336×920)
- 9 micron pixels => 0.280″/pixel
- 37.25×25.70mm detector surface => 18.7’x12.6′ coverage
- 16 bits/pixel => dynamic range of 65 536
- 21 Mb image files with no binning
- Anti-Blooming Gate
- ~60 000 e– Full Well Capacity (ABG)
- Dark Current: 1.5 e– / pixel / s
- Read Noise: 11 e–
- Exposures of 0.01 to 3600 seconds (0.01 s resolution)
- Gain: 0.8 e– / ADU
- Cooling: Thermoelectric, -30 C from ambient minimum
The imager has four standard resolution modes: no binning, 2×2 binning, 3×3 binning, and 9×9 binning. It can also be used in Nx1, Nx2, and Nx3 binning modes where N is an integer between 1 and 256. This is very useful when using the Spectrograph.
Spectral Response
The ST-11000M camera uses a Kodak KAI-11000M CCD. It has a spectral sensitivity range of 340 nm to 730 nm (>20%), peaking at 500 nm. See Fig. 1.
Fig. 1 Spectral response of the KAI-11000M CCD.
Note that this CCD is somewhat less sensitive than our ST-8E (up to 20% lower in QE betwen 400-700 nm, although the difference increases to 50% above 750 nm) but the FOV is far larger (a factor 3).