LOR1a Parameters
Device Identification
Chip name LOR1a
Year of manufacture 1997
Serial number W20-1-1
First light on La Palma June 1997
Description: Replacement for failed LOR1 using same cryostat
Operational Characteristics
Measurements made in lab.
Speed
|
Standard
|
Quick
|
Turbo
|
Bias(ADU)
|
2486
|
1311
|
269
|
Gain(e/ADU)
|
0.63
|
0.92
|
1.41
|
Noise(e)
|
6.4
|
8.1
|
11.1
|
Linear to(ADU)
|
60K
(see below)
|
40K
(see below)
|
25K
(see below)
|
Readout time(s)
|
.
|
142
|
.
|
Standard linearity
Quick Linearity
Turbo linearity
Vertical CTE 0.999991
Horizontal CTE 0.99956
Physical Characteristics
Pixel Scale (isis blue) 0.21 arc/pixel
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 2148
X size of useful imaging area 2048
Y size of useful imaging area 2048
X start of useful imaging area ?
Ystart of useful imaging area ?
LN2 capacity of cryostat 2.5 litres
Cryostat window thickness 4mm
Distance from window to CCD . mm
Cryostat window size .
Operational Parameters
Flooding type .
Operating temperature 153K
Prefered amplifier R
Network name CCD2
Anti-blooming available no
Orientation of instrument for prefered output
Telemetry values :
RD 6.49V V- -15.00V H+SL -17.99V
OD 6.99V H++ 0.00V R-SL 1.59V
OG -10.00V H- -11.99V R+SL -17.99V
VSS -6.99V R+ -1.99V
ABG -10.00V R- -11.99V
BG 2.99V V-SL 2.19V
ABD 6.99V V+SL -17.50V
V++ -3.99V H-SL 1.59V
Measured Characteristics
Quantum Efficiency
Peak non-uniformity in QE across chip .
Dark current 11 e/hour
Point spread function .
Full well bloom limit 148000 elctrons
Chip flatness 21 micron convex bow
Cosmetics: Column defect down centre of chip
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