FORS 1 - CCD System

Readout Noise and Conversion Factor

The following data are measured in Paranal on 31/Oct/1999 using 2 flat 2 bias method.

Speed ( kps ) Conversion Factor ( e^- / ADU ) Readout Noise ( e^- rms )

Port A ( left bottom ) 50 ( low gain ) 2.80 ± 0.08 5.70 ± 0.20

50 ( high gain ) 1.45 ± 0.02 5.00 ± 0.15

Port B ( right bottom ) 50 ( low gain ) 3.10 ± 0.09 5.90 ± 0.20

50 ( high gain ) 1.78 ± 0.02 5.15 ± 0.17

Port C ( left top ) 50 ( low gain ) 3.50 ± 0.08 6.20 ± 0.20

50 ( high gain ) 1.57 ± 0.02 5.35 ± 0.18

Port D ( right top ) 50 ( low gain ) 3.20 ± 0.10 6.00 ± 0.20

50 ( high gain ) 1.64 ± 0.02 5.11 ± 0.16

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	Speed ( kps )	Conversion Factor ( e^- / ADU )	Readout Noise ( e^- rms )
Port A ( left bottom )	50 ( low gain )	2.80 ± 0.08	5.70 ± 0.20
Port A ( left bottom )	50 ( high gain )	1.45 ± 0.02	5.00 ± 0.15
Port B ( right bottom )	50 ( low gain )	3.10 ± 0.09	5.90 ± 0.20
Port B ( right bottom )	50 ( high gain )	1.78 ± 0.02	5.15 ± 0.17
Port C ( left top )	50 ( low gain )	3.50 ± 0.08	6.20 ± 0.20
Port C ( left top )	50 ( high gain )	1.57 ± 0.02	5.35 ± 0.18
Port D ( right top )	50 ( low gain )	3.20 ± 0.10	6.00 ± 0.20
Port D ( right top )	50 ( high gain )	1.64 ± 0.02	5.11 ± 0.16