REVISION DATE: 15-Apr-2015 12:54:37

Mike day 3 data changed the jig and FC ferrules and looked at saturation again, this time with different gains. This shows how the dark data changes with gain

 
MIKES day3 email: 
Mark suggested looking at gain, and he also thought that the fiber optic connector at the jig 
- the FC ferrule - was too long and was maybe interfering with the FOs FOV.   So there was a different jig at  
the sphere tonight, with only alignment holes (no FC connectors), and I only used 5x FOs, #1,4,7,10,13, and I took  
saturation data at 1x, 2x, 4x preamp gains, via the Oriel lamp. 
 
I have only 1 log sheet for you, but I also have scans of the Andor System Performance Booklet for this camera = SN: 16346. 
 
From pg.2 one will notice: Saturation Signal per pixel = 120,022 (electrons/pix) 
 
CCD Sensitivity = 5.2 (eles/ A/D count)  @  x1 Preamp gain, 0.05 MHz readout 
CCD Sensitivity = 2.8 (eles/ A/D count)  @  x2 Preamp gain, 0.05 MHz readout 
CCD Sensitivity = 1.2 (eles/ A/D count)  @  x4 Preamp gain, 0.05 MHz readout 
 
so   @ gain 1, saturation=   120,022/5.1 =   23,081  (ADU/pix) 
     @ gain 2, saturation=   120,022/2.8 =   42,865  (ADU/pix) 
     @ gain 4, saturation=   120,022/1.2 = 100,018  (ADU/pix) 
 
Maybe the well was saturating at gain x1 WAY before the 16-bit A/D limit was reached? 
I think thats what it looked like tonight... 
 
  
  

All three gains

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GAIN 1

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GAIN 2

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GAIN 41

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