INGRID Array History
Basic parameters
Gain |
4.1-4.3 e-/ADU
|
Readnoise |
20-25 e- |
Full-well capacity
|
|
Pixel scale |
0.04 "/pix |
Readout time |
0.76s |
Gain |
3.9-4.1 e-/ADU
|
Readnoise |
18-24 e- |
Full-well capacity
|
|
Pixel scale |
0.04 "/pix |
Readout time |
0.76s |
Gain |
5.3 e-/ADU |
Readnoise |
26-45 e- |
Full-well capacity
|
22000 ADU |
Pixel scale |
0.238 "/pix |
Readout time |
0.864s (timing error
corrected) |
Gain |
5.3-6.4 e-/ADU |
Readnoise |
37-65 e- |
Full-well capacity
|
28000 ADU |
Pixel scale |
0.242 "/pix (with old foreoptics)
|
Readout time |
0.896s (timing error corrected) |
This section contains darks and hot pixel masks for the
INGRID array,
which are representative of each period between
cool downs or software/electronic changes. The darks and hot pixel
masks contained here are not intended to be
used by the observers. Each observer should create their own darks
during
the observing run and generate his/her own pixel mask from the data.
This section is intended to record useful data for the INGRID team.
- date: 16-June-2005 (after warming up in February 05 and
cooling down in June 05); INGRID @
GRACE Nasymth
array temperature: 80.5 K
readout noise (post-pre): 5.0 adu (~20 electrons)
number of hot pixels (in 10s): 6550 (0.62%). Per
quadrants: 0.31%, 0.32%, 0.93% and 0.93% of the pixels are hot in
quadrants left-up, right-up, right-down and left-down respectively
- date: 03-Feb-2005 (monitoring); INGRID @
GRACE Nasymth
array temperature: 79.0 K
readout noise (post-pre): 5.5 adu (~22 electrons)
number of hot pixels (in 10s): 7989 (0.76%). Per
quadrants: 0.54%, 0.50%, 1.02% and 0.98% of the pixels are hot in
quadrants left-up, right-up, right-down and left-down respectively
- date: 27-Mar-2003 (after the accidental
(not
complete) warm--up of INGRID); INGRID @ Cass, CCC off -- only LN2 but 2
cans
array temperature: 79.0 K
readout noise (post-pre): 8 adu (~32 electrons)
number of hot pixels (in 10s): 7617 (0.73%). Per
quadrants: 0.35%, 0.36%, 1.1% and 1.1% of the pixels are hot in
quadrants left-up, right-up, right-down and left-down respectively
- date: 6-Feb-2003 (after warming up and
cooling down the 30th January 2003, to install the new LN2 can); INGRID
@ Cass, CCC off -- only LN2 but 2 cans
array temperature: 80.2 K
readout noise (post-pre): 5.2 adu (~21 electrons)
number of hot pixels (in 9.8s): 8006 (0.76%). Per
quadrants: 0.50%, 0.47%, 1.07% and 1.01% of the pixels are hot in
quadrants left-up, right-up, right-down and left-down respectively
- date: 17-May-2002 (after cooling down on
the 21st March 2002); INGRID @ Ghrill but CCC working
array temperature: 71.8 K
readout noise (post-pre): 5.1 adu (~20 electrons)
number of hot pixels (in 9.8s): 3961 (0.38%). Per
quadrants: 0.19%, 0.21%, 0.57%, and 0.54% of the pixels are hot in
quadrants left-up, right-up, right-down and left-down respectively
- date: 5-Sept-2001 (just after the change
to UltraDas)
array temperature: not recorded
readout noise (post-pre): 4.9 adu (~19 electrons)
number of hot pixels (in 10s): 6094 (0.6%). Per
quadrants: 0.47%, 0.37%, 0.79% and 0.69%
of the pixels are hot in quadrants left-up, right-up, right-down and
left-down respectively
|