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RED+ Parameters with UltraDAS + SDSU Gen.3

Device Identification

Chip name Red+
Year of manufacture 2006
Serial number 05515-03-01
First light on La Palma November 2006
Description Deep Depletion with additional fringe suppression and an AR coating peaking at 900nm

Chip type CCD44-82-5-D23

Operational Characteristics

Speed  Slow Fast
Bias(ADU) 1460


Gain(e/ADU) 0.98
Noise(e) 3.4 to 4.4
5.7 to 6.7
Noise (ADU) 3.5 to 4.5 3.0 to 3.5
Linear to(ADU) 
{also see graphs below}

<1% to 60K

<1% to 60K

Readout time(s) 46

The detector noise will be somewhere in the range of values shown above, these values were measured at the telescope.

Windowing  : available with no reduction in performance

Binning : available with no reduction in performance
Vertical CTE 0.99999
Horizontal CTE  0.999984 (marginal)

Physical Characteristics

X Pixel size 15 microns
Y Pixel size 15 microns
X size in pixels of digitised area 2148
Y size in pixels of digitised area 4200
X size of useful imaging area 2048
Y size of useful imaging area 4096
X start of useful imaging area 50
Ystart of useful imaging area 1
LN2 capacity of cryostat 2.5 litres
Cryostat window thickness 4 mm
Distance from window to CCD  
Cryostat window size 30 mm x 60 mm

Operational Parameters

Flooding type none
Operating temperature 158K
Cool down time 4 hours see graph
Preferred amplifier  LEFT

Measured Characteristics


Dark current <8e/hour
Cosmetics dark column: 85,1249     bright defects: none

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Last modified: 21 March 2014