Detector
INGRID's detector is a
Rockwell 1024x1024 HgCdTe Hawaii array. The main characteristics of
the detector (at the Nasmyth focal station) are summarised below. More
information
is also available within the
ING detector
pages.
Detector size*
|
1024 × 1024 pixels
|
Full-well
capacity
|
~28000-30000 ADU
|
Spectral
range*
|
0.8-2.5 µm
|
Quantum
efficiency*
|
~58% (J, H)
~62% (K)
|
Readout noise
(CDS)
|
18-24 e¯
|
Gain
|
3.9-4.1 e¯ /ADU |
Pixel size
|
18.5 µm |
Pixel scale*
|
0.04" / pixel
|
Field of view
|
39" × 39"
|
Hot pixels
|
<1% (see here)
|
Linearity
|
~2% for 0-12000 ADU (see this linearity plot)
|
Dark current
|
See here
|
Readout time
|
0.76 s
|
* Quantities as measured by the
manufacturer.
Detector history