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FOCAS instrument parameters
In June 2010, the CCDs have been replaced with fully-depleted type CCDs by Hamamatsu Photonics K.K.
Check this page for more information.
Detectors |
2 2K x 4K 4-side buttable CCDs (Hamamatsu) |
Pixel size |
15 um |
Pixel scale |
0.1038'' |
Field of view |
6' (circular) |
Gain |
1.9 - 2.1 e-/ADU |
Dark current |
< 0.1 e-/s |
Read noise |
4 e- rms |
Saturation level |
40 000 e- |
Readout time |
24 s (whole CCD area, no binning) |
Min. exposure time |
0.5 s (3%) or 1.0 s (1%) |
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