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RED+2 Parameters with UltraDAS + SDSU Gen.3

Device Identification

Chip name Red+2
Year of manufacture 2007
Serial number 06451-03-02
Britannia number 125952
First light on La Palma 18th February 2011
Description Deep Depletion with additional fringe suppression and an AR coating peaking at 900nm.

Chip type CCD44-82-1-D23

Operational Characteristics

Speed  Slow Fast
Bias(ADU) 3730


Gain(e/ADU) 0.91
Noise(e) 3.48
Noise (ADU) 3.83 3.12
Linear to(ADU) 
{also see graphs below}

<1% to 60K

<1% to 60K

Readout time (s) IDS window [755:1119,1:4200] 13 10
Readout time(s) 46


Windowing  : available with no reduction in performance.

Binning : available with no reduction in performance.
Vertical CTE >0.999999
Horizontal CTE  0.999998

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  Right ( Left is good )

Measured Characteristics

This graph refers to RED+, however the RED+2 chip is identical.


Fringing. See below a graph of fringe amplitude vs wavelength for EEV10 and Red+2

Fringing. Flat field showing fringing, EEV10 on the left Red+2 on the right.


Dark current 8 e/hour
Cosmetics Column defects :

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Last Modified: 17 January 2018