Imaging flats
Below are tables that provide estimates for the maximum number of counts
for a given exposure time using the
imaging lamp. Please check the count level before acquiring
several flats in a row because the lamp intensity may vary with time and
dichroic type. .
...
Note: Table is being built. Sorry for the inconvenience.
LRIS BLUE:
| Filter |
Dichroics |
| Mirror |
680 |
560 |
500 |
460 |
time
(s) |
ADUs
@ Max |
time
(s) |
ADUs
@ Max |
time
(s) |
ADUs
@ Max |
time
(s) |
ADUs
@ Max |
time
(s) |
ADUs
@ Max |
| V |
|
|
10 |
8,000 |
10 |
10,000 |
N/A |
|
N/A |
|
| G |
|
|
30 |
10,000 |
30 |
10,000 |
30 |
6,000 |
60 |
6,000 |
| B |
|
|
90 |
11,000 |
90 |
12,000 |
90 |
11,000 |
90 |
9,000 |
| U |
|
|
|
|
|
|
|
|
|
|
LRIS RED:
| Filter |
Dichroics |
| Mirror |
680 |
560 |
500 |
460 |
time
(s) |
ADUs
@ Max |
time
(s) |
ADUs
@ Max |
time
(s) |
ADUs
@ Max |
time
(s) |
ADUs
@ Max |
time
(s) |
ADUs
@ Max |
| V |
|
|
10 |
10,000 |
|
|
|
|
|
|
| R |
|
|
18 |
11,000 |
6 |
10,000 |
6 |
10,000 |
6 |
10,000 |
| I |
|
|
5 |
14,000 |
5 |
12,000 |
5 |
12,000 |
5 |
12,000 |