SV 11 2 » History » Version 5
Gary Bernstein, 11/02/2012 03:17 PM
1 | 1 | Gary Bernstein | h1. SV Notes for MJD 56234 (starting evening of November 2) |
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2 | 1 | Gary Bernstein | |
3 | 1 | Gary Bernstein | h2. Observers |
4 | 1 | Gary Bernstein | |
5 | 1 | Gary Bernstein | | *Observer 1* | *Observer 2* | *Run Manager* | *SISPI Expert on Call*| *Eyeball Squad*| |
6 | 1 | Gary Bernstein | | Soares Santos | Depoy | Soares Santos | Honscheid | Romer | |
7 | 1 | Gary Bernstein | |
8 | 1 | Gary Bernstein | h2. DECam Configuration and Setup |
9 | 1 | Gary Bernstein | |
10 | 1 | Gary Bernstein | |SISPI Configuration File| *sv.ini*| |
11 | 1 | Gary Bernstein | |DECam constants |*DECAM:CURRENT*| |
12 | 1 | Gary Bernstein | |Proposal ID| *2012B-0003*| |
13 | 1 | Gary Bernstein | |Image Processing (Calibration)| *NCSA*| |
14 | 1 | Gary Bernstein | |Image Processing (First Cut)|*NCSA*| |
15 | 1 | Gary Bernstein | |
16 | 1 | Gary Bernstein | h2. Almanac |
17 | 1 | Gary Bernstein | |
18 | 2 | Gary Bernstein | Twilight ends 21:34, middle of night to hand over to community SV at 01:26 |
19 | 1 | Gary Bernstein | |
20 | 2 | Gary Bernstein | Moonrise at 23:24, 84% illuminated, 54 degrees away from our Mini-Survey field on Stripe 82. |
21 | 1 | Gary Bernstein | |
22 | 1 | Gary Bernstein | h2. Weather Conditions |
23 | 1 | Gary Bernstein | |
24 | 1 | Gary Bernstein | * [[Tololo Weather Links]] |
25 | 1 | Gary Bernstein | |
26 | 1 | Gary Bernstein | |
27 | 1 | Gary Bernstein | h2. Observing Plan and Goals for the Night |
28 | 1 | Gary Bernstein | |
29 | 1 | Gary Bernstein | # [[Calibration_Observations|Standard bias and dome flat]] sequence during afternoon |
30 | 3 | Gary Bernstein | # [[Calibration Observations|Dark frames]] if no bright lights needed in dome. _Try to get darks today, more important than getting all domes again_ |
31 | 1 | Gary Bernstein | # Please try to get dome open for temperature equilibration at earliest appropriate time, be sure all cooling/ventilation systems are on. |
32 | 3 | Gary Bernstein | # [[Calibration Observations|i-band twilight flats]] - _Quit twilights as soon as sky is dark enough for stds_ |
33 | 1 | Gary Bernstein | |
34 | 1 | Gary Bernstein | Operate through night with the baseline Focus&Alignment configuration (Telescope and filter LUTs in use, z Trim on, accumulate). Take note of how large the first focus correction is after slewing to new field: this will determine whether it will be habitually necessary to take a short (~30s) exposure after each slew to allow donuts/AOS to determine new focus position. |
35 | 1 | Gary Bernstein | |
36 | 1 | Gary Bernstein | Monitor Conditions: |
37 | 1 | Gary Bernstein | # Check on DIMM status, running if at all possible. |
38 | 1 | Gary Bernstein | # Make sure RASICAM is online if weather conditions permit. |
39 | 1 | Gary Bernstein | # A few times per night ask the operator to contact the other telescopes on Tololo to get their seeing value. Record those in the eLog. |
40 | 1 | Gary Bernstein | |
41 | 1 | Gary Bernstein | If *good* conditions - sky is clear and seeing is <=1.1": |
42 | 1 | Gary Bernstein | |
43 | 1 | Gary Bernstein | # [[Calibration_Observations|Photometric standards]] sequence as soon as dark enough (grizY in 3 fields at different airmasses, preferably one at X < 1.25, one at X = 1.25-1.65 and one at X > 1.65). Follow link for the suggested fields and scripts. Douglas suggests standards can begin 30 min before astronomical twilight. |
44 | 4 | Gary Bernstein | # [[SN_Observing|SN template observations]] in gr for ~2 hrs until moon elevates sky brightness. Given the guiding errors invalidate nearly all of yesterday's SN template observations, we should just start the sequence afresh. |
45 | 4 | Gary Bernstein | # *If the 200s exposures are still trailed* abandon the SN templates, use time for debugging as needed, and spend sky time taking the [[Star_Flat_Observations]] with 50s exposure times to ameliorate trailing. |
46 | 1 | Gary Bernstein | # [[SN_Observing|SN template observations]] in iz for remainder of half-night (will not have time to complete all of them) |
47 | 3 | Gary Bernstein | # 1:10 AM repeat another [[Calibration_Observations|photometric standards]] sequence of grizY in 3 fields |
48 | 1 | Gary Bernstein | # Request of Dara to repeat grizY standards in 2 or 3 fields at AM twilight. |
49 | 1 | Gary Bernstein | |
50 | 1 | Gary Bernstein | If *moderate* conditions - thin clouds, and/or poorer seeing <=1.4" |
51 | 1 | Gary Bernstein | # [[Calibration_Observations|Photometric standards]] in evening twilight |
52 | 1 | Gary Bernstein | # [[Star_Flat_Observations|StarFlat sequences]] of 20 wide dithers in each grizY (g and r first, with Moon down). Move to lowest accessible Galactic latitude (b>=10 degrees) to increase stellar density w/o crowding. Should take ~20 x (80+30)s = 37 min per filter, ~3 hrs total. |
53 | 1 | Gary Bernstein | # If time permits: [[Polar_Axis|Polar Axis]] determination exposures. |
54 | 1 | Gary Bernstein | # [[Calibration_Observations|Photometric standards]] at 1:10 AM |
55 | 1 | Gary Bernstein | |
56 | 1 | Gary Bernstein | If *poor* conditions - thicker clouds and/or seeing >1.4" |
57 | 1 | Gary Bernstein | # [[Calibration_Observations|Photometric standards]] at evening and 1:10 AM if thin clouds or clear |
58 | 1 | Gary Bernstein | # Take [[Star_Flat_Observations|StarFlat sequence]] in i band if thin clouds or clear |
59 | 1 | Gary Bernstein | # [[Polar_Axis|Polar Axis]] determination |
60 | 1 | Gary Bernstein | # DECal sweeps that were not completed during commissioning |
61 | 1 | Gary Bernstein | |
62 | 1 | Gary Bernstein | Regardless of cloud conditions, If QR indicates FWHM of PSF is stable at <= 1.1" at any period: |
63 | 1 | Gary Bernstein | # Take 2 focus frames in i band, 25 um steps +- 100 um from donut-recommended best focus position. [This is to determine best focus for science array relative to best focus for F/A CCDs.] |
64 | 1 | Gary Bernstein | |
65 | 1 | Gary Bernstein | h2. Notes from the 4PM Meeting and Additional Comments |
66 | 1 | Gary Bernstein | |
67 | 5 | Gary Bernstein | Eyeball squad and SN squad both report that nearly all long exposures are seriously trailed. Trails are diagonal, not aligned to E-W. So top priority for tonight is to insure that guider is on and working properly. The QR report of FWHM's clearly showed worse FWHM on all the long exposures. |
68 | 5 | Gary Bernstein | |
69 | 5 | Gary Bernstein | Extensive debate ensued about the nature of the problem. GUIDER=3 is set in headers of all the trailed images. |
70 | 5 | Gary Bernstein | |
71 | 5 | Gary Bernstein | Edited the plan above to reflect that SN templates should not be taken if the guiding issue persists. |
72 | 5 | Gary Bernstein | |
73 | 1 | Gary Bernstein | h2. Notes from Observers |
74 | 1 | Gary Bernstein | |
75 | 1 | Gary Bernstein | h2. Notes on Analyses of Night's Data: |