CCAF - CCD

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CCD

CCD ST-6 CAMERA

Bought at the end of 1992, just after few months of working we discovered our first asteroid, (7433) Pellegrini.
Its cooled from an efficient selfmade system, with forced circulation of freezing fluid that maintains the chip at -50°C in winter and -45°C in summer even with external temperatures around or above 30°C.

Brand	SBIG Santa Barbara CA, USA
Chip	TC 241
Dark current	30 e^-/s
Dynamic range	63 dB (1:1400)
A/D conversion	16 bit
Pixels number	375 x 242
Pixels dimensions	23 x 27 micron
Full well capacity	400 000 e^-
Sensitive area	8.6 x 6.5 mm
Field at Newton focus	16.5 x 12.5 arcmin

CCD ST-4 CAMERA

Brand	SBIG
Chip	TC 211
Dark current	500 e^-/s
Dynamic range	60 dB (1:1000)
A/D conversion	8 bit
Pixels number	192 x 165
Pixels dimensions	13.7 x 16 micron
Full well capacity	150 000 e^-
Sensitive area	2.6 x 2.6 mm
Field at refractor focus	4 x 4 arcmin


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