Caltech Optical Observatories / NASA Jet Propulsion Laboratory
Palomar Adaptive Optics
Palomar Adaptive Optics Test Plan
Title
NGS AO Checkout (12/06 v2)
Date
Lead
Time requested
Required conditions
Every AO engineering night
A. Bouchez
20 minutes. Start after 6º twilight.
N/A
Purpose
Verify acceptable performance of the NGS AO system for subsequent engineering tests,
and measuring seeing, on-axis Strehl and isoplanatic angle.
Test procedure
1. Choose a binary star near zenith from the list below.
2. Acquire the primary with the AO system with an initial frame rate of 500Hz. Adjust
the frame rate to get 100-200 cts/subap on the WFS.
3. Take a wavefront sensor sky.
4. Perform both coarse and fine WFS-DM registration.
5. Verify that co_default2 is loaded and that focus offloading is on.
6. Close the TT and DM loops.
7. Create a flat map on the star.
7.1. IDL> ao_make_dm_flat_map, filename
7.2. Set the flat map to default when complete.
8. While waiting for the flat map, check signal levels on PHARO:
8.1. Initial setup: 25mas FOV, filter Ks, ND 1%, standard cross, 2s integration.
8.2. Adjust the exposure time and filter to get 10-15k peak counts on brighter star.
9. With the loops closed, adjust tel. pointing to center both stars in the PHARO FOV.
10. Open the TT and DM loops.
11. Repeat the lenslet to DM registration.
12. Offset to sky and take a new WFS background.
13. Record 3 PHARO sky frames.
14. Offset back to star and close TT and DM loops.
15. Record 3 images with PHARO. Note the directory, frame numbers, and Strehl.
16. Open the DM loop only.
17. Record 1 image with PHARO, 30s integration. Note frame number and FWHM.
18. Record the telescope focus.
Results (use one column per night)
UT date
Weather conditions
PHARO directory
Target WDS #
13. Sky frames
15. Closed-loop frames
15. Closed-loop Strehl
17. Open-loop frame
17. Open-loop FWHM
18. Telescope focus
1
Caltech Optical Observatories / NASA Jet Propulsion Laboratory
Palomar Adaptive Optics
Star list
Result of a VizieR search of the Washinton Double Star Catalogue (I/237) with the following
constraints: (DE2000: "18:20:00..48:20:00") AND (Sep1: "8..15") AND (Sep2: "8..15") AND
(MagA: "5..7.5") AND (MagB: ">8")
This list is available in the Palomar format at: /export/home/pharo/lgs/wds2.lst
The digit in the first column provides a link to the Vizier page on the star.
Full
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
recno
1632
4755
6043
7194
8161
10866
11686
13555
13915
15769
21453
23030
24579
25336
37648
39044
39405
40881
40900
42896
52744
52898
57496
57902
60632
61322
64828
67000
67003
68168
68328
69741
74560
75567
RA2000 DE2000
"h:m:s" "d:m:s"
pa1
Sep1
deg arcsec
MagA
mag
MagB
mag
00
01
02
02
03
04
04
05
05
05
06
07
07
07
11
12
12
13
13
14
18
18
19
19
19
19
20
20
20
21
21
21
22
23
160
32
183
260
8
174
36
27
342
204
355
50
9
289
266
275
161
316
288
71
202
193
295
271
29
311
134
194
75
299
315
330
270
335
6.30
6.30
7.20
6.16
6.90
6.90
6.38
6.00
5.02
6.80
5.27
7.10
5.13
5.00
6.46
5.70
7.50
6.82
6.82
7.00
6.15
7.00
7.30
7.00
7.30
5.04
7.20
5.20
6.40
7.40
7.45
6.20
7.47
6.70
11.26
10.90
11.00
11.30
8.40
14.10
8.28
8.65
11.10
11.80
14.00
11.10
11.70
13.60
8.39
10.20
8.12
10.80
10.90
10.20
13.30
12.00
12.80
8.60
13.40
9.03
11.20
11.50
12.40
13.40
12.00
12.20
10.80
10.40
32.8
41.3
09.6
38.3
01.5
09.6
28.9
09.8
15.4
43.0
51.6
06.2
22.0
29.8
38.7
17.5
28.1
10.9
11.5
06.7
01.6
03.9
03.9
08.8
41.3
49.0
24.2
47.2
47.3
03.5
05.7
24.1
46.0
07.4
+28
+25
+42
+37
+32
+31
+30
+28
+32
+33
+21
+24
+36
+27
+45
+28
+44
+21
+21
+34
+33
+26
+34
+34
+30
+19
+29
+34
+45
+24
+47
+25
+19
+20
17
45
51
44
25
39
22
02
41
19
46
52
46
55
07
56
48
14
55
47
19
39
09
46
43
09
00
22
35
00
48
19
15
35
2
8.7
11.3
10.9
9.2
8.2
12.8
14.2
11.8
12.6
11.5
10.6
14.1
10.6
13.9
10.5
8.2
10.4
10.9
10.6
14.2
13.3
12.4
11.1
12.9
9.1
8.6
13.0
12.4
14.0
13.1
10.4
8.5
8.7
13.5