Subject: 2.5m obslog 20211114 (SJD 59533) From: dgatlin@apo.nmsu.edu Date: Mon, 15 Nov 2021 10:57:10 +0000 (UTC) APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Sunday November 14, 2021 (SJD 59533) ---- Observing Team ---- Dylan Gatlin Karen Kinemuchi (R) Kaike Pan (R) Jimmy Davidson (onsite) John Wilson (phone) ---- Observing Plan ---- Apogee dither limit tests ---- Observing Summary ---- We worked on the apogee dither mechanism for most of the night. We were able to move the dither position, and found that the mechanism is close to the lower limit and we will need to find a new home position. When the dither mechanism was far away from a limit, it performed extremely well and usually moved +/- 0.05pix of where it was intended to go. Notes: - Boolean actorkeys do not save into Influx, see 25m:apogee:ditherLimitSwitch for an example - I noticed some weird artifacts in the quickred data for image 39710009 near the right edge. - Integrated dust counts: ~1500 dust-hrs ---- Observing Log ---- Jimmy is onsite with a class from UVa, we decided to take a look at the apogee dither mechanism. We went to the apogee room and opened a GUI, and although most buttons were fine, the dither +0.5 and -0.5 buttons were grayed out. Jimmy asked John Wilson about it. John said that he was able to use those buttons this summer during shutdown. Took test boss cals Took ECamera cals with 9x15s dark and 50s flat 23:20Z Began ventilation Weather is mostly clear, with some clouds coming in from the north that won't get here until late. Ready for opening at sunset. 00:05Z Opened Jimmy shut down the apogee actor, then we went down to the apogee room to try moving the apogee dither mechanism. Jimmy was able to get the buttons to work, and sent it +0.5pix. After 10 minutes, we got a heartbeat alert, which we solved by bringing the actor back online and running a hub startNubs. We ran `apogee dither init` and`apogee arrayPower state=on` (which fixed the arrayPower critical alert). After that, we were able to issue dithers via stui. We took a bunch of back and forth dithers to evaluate its performance. Some of those tests had the shutter closed, so they reported strange results. Exposures 21 to 32 were taken with closed shutters and can be ignored. Below is an annotated list of the dithers we made and their exposures. The column second from the right is the dither relative to a default value # Value at the beginning of night 59533 6 22:30 39710006 Arc-Thar 12 ? 13.0 19- 0 a-b-c 0.51 - # We restarted the apogee actor and increased the dither by 0.5 59533 12 00:41 39710012 Arc-Thar 12 B 13.5 19- 0 a-b-c 0.73 - # We took these in a loop of dithering back and forth 59533 13 00:46 39710013 Arc-Thar 12 A 13.0 19- 0 a-b-c 0.60 - 59533 14 00:48 39710014 Arc-Thar 12 B 13.5 19- 0 a-b-c 0.72 - 59533 15 00:51 39710015 Arc-Thar 12 A 13.0 19- 0 a-b-c 0.57 - 59533 16 00:53 39710016 Arc-Thar 12 B 13.5 19- 0 a-b-c 0.69 - 59533 17 00:55 39710017 Arc-Thar 12 A 13.0 19- 0 a-b-c 0.54 - 59533 18 00:57 39710018 Arc-Thar 12 B 13.5 19- 0 a-b-c 0.67 - # Dithered back and forth 20 times 59533 34 01:51 39710034 Arc-Thar 12 B 13.5 19- 0 a-b-c 0.47 - 59533 35 01:53 39710035 Arc-Thar 12 A 13.0 19- 0 a-b-c 0.30 - 59533 36 01:56 39710036 Arc-Thar 12 B 13.5 19- 0 a-b-c 0.43 - 59533 37 01:58 39710037 Arc-Thar 12 A 13.0 19- 0 a-b-c 0.29 - 59533 38 02:00 39710038 Arc-Thar 12 B 13.5 19- 0 a-b-c 0.41 - 59533 39 02:02 39710039 Arc-Thar 12 A 13.0 19- 0 a-b-c 0.28 - 59533 40 02:05 39710040 Arc-Thar 12 B 13.5 19- 0 a-b-c 0.39 - apogee dither namedpos=A apogee dither pixelpos=15 59533 41 02:33 39710041 Arc-Thar 12 ? 15.0 19- 0 a-b-c 1.83 - apogee dither pixelpos=15.5 59533 42 02:39 39710042 Arc-Thar 8 ? 15.5 19- 0 a-x-x 2.37 - apogee dither pixelpos=15 59533 43 02:42 39710043 Arc-Thar 8 ? 15.0 19- 0 x-x-x 1.87 - apogee dither pixelpos=13 59533 44 02:46 39710044 Arc-Thar 8 A 13.0 19- 0 x-x-x 0.60 - apogee dither namedpos=B 59533 45 02:48 39710045 Arc-Thar 8 B 13.5 19- 0 a-b-c 0.59 - apogee dither pixelpos=13 59533 46 02:53 39710046 Arc-Thar 8 A 13.0 19- 0 a-b-c 0.58 - apogee dither pixelpos=12.5 59533 47 02:56 39710047 Arc-Thar 8 ? 12.5 19- 0 x-x-x 0.56 - apogee dither pixelpos=14 59533 48 03:00 39710048 Arc-Thar 8 ? 14.0 19- 0 a-b-c 0.84 - apogee dither pixelpos=15 59533 49 03:05 39710049 Arc-Thar 8 ? 15.0 19- 0 x-x-x 1.81 - apogee dither pixelpos=14.5 59533 50 03:08 39710050 Arc-Thar 8 ? 14.5 19- 0 x-x-x 1.26 - apogee dither pixelpos=15.5 59533 51 03:12 39710051 Arc-Thar 8 ? 15.5 19- 0 x-x-x 2.27 - # Looped these commands 5 times apogee dither pixelpos=15 apogee expose nreads=8 ; object=ArcLamp apogee dither pixelpos=15.5 apogee expose nreads=8 ; object=ArcLamp 59533 52 03:16 39710052 Arc-Thar 8 ? 15.0 19- 0 a-b-c 1.79 - 59533 53 03:18 39710053 Arc-Thar 8 ? 15.5 19- 0 a-b-c 2.26 - 59533 54 03:19 39710054 Arc-Thar 8 ? 15.0 19- 0 a-b-c 1.78 - 59533 55 03:21 39710055 Arc-Thar 8 ? 15.5 19- 0 a-b-c 2.26 - 59533 56 03:22 39710056 Arc-Thar 8 ? 15.0 19- 0 a-b-c 1.77 - 59533 57 03:24 39710057 Arc-Thar 8 ? 15.5 19- 0 a-b-c 2.26 - 59533 58 03:25 39710058 Arc-Thar 8 ? 15.0 19- 0 a-b-c 1.75 - 59533 59 03:27 39710059 Arc-Thar 8 ? 15.5 19- 0 a-b-c 2.25 - 59533 60 03:29 39710060 Arc-Thar 8 ? 15.0 19- 0 a-b-c 1.75 - 59533 61 03:30 39710061 Arc-Thar 8 ? 15.5 19- 0 a-b-c 2.25 - # Similar loops around 10 59533 62 03:34 39710062 Arc-Thar 8 ? 10.0 19- 0 a-b-c 0.54 - 59533 63 03:36 39710063 Arc-Thar 8 A 10.5 19- 0 a-b-c 0.54 - 59533 64 03:38 39710064 Arc-Thar 8 ? 10.0 19- 0 a-b-c 0.53 - 59533 65 03:40 39710065 Arc-Thar 8 A 10.5 19- 0 a-b-c 0.52 - # And 17 59533 66 03:45 39710066 Arc-Thar 8 ? 17.0 19- 0 a-b-c 3.73 - 59533 67 03:47 39710067 Arc-Thar 8 ? 17.5 19- 0 a-b-c 4.23 - 59533 68 03:49 39710068 Arc-Thar 8 ? 17.0 19- 0 a-b-c 3.74 - 59533 69 03:51 39710069 Arc-Thar 8 ? 17.5 19- 0 a-b-c 4.22 - 59533 70 03:53 39710070 Arc-Thar 8 ? 17.0 19- 0 a-b-c 3.72 - 59533 71 03:54 39710071 Arc-Thar 8 ? 17.5 19- 0 a-b-c 4.21 - 59533 72 03:56 39710072 Arc-Thar 8 ? 17.0 19- 0 a-b-c 3.71 - 59533 73 03:58 39710073 Arc-Thar 8 ? 17.5 19- 0 a-b-c 4.21 - 59533 74 04:00 39710074 Arc-Thar 8 ? 17.0 19- 0 a-b-c 3.70 - 59533 75 04:01 39710075 Arc-Thar 8 ? 17.5 19- 0 a-b-c 4.20 - apogee dither pixelpos=19 59533 76 04:03 39710076 Arc-Thar 8 ? 19.0 19- 0 a-b-c 5.72 - At this point, we had determined that the lower limit for motion for the dither mechanism was close to 13, and any values below that would not be at a lower dither. Kaike emailed what we had learned to the apogee team and we concluded the tests, leaving the dither mechanism at 19. APOGEE has a keyword called 25m:apogee:ditherLimitSwitch that records if a limit switch is being hit. According to STUI, this keyword was never tripped. STUI also reports ditherLimits, which are at 1 and 19. Even when we sent the dither position to 19.5, the ditherLimitSwitch keywords were not triggered. 07:30Z closed the telescope ---- Mirror Numbers ---- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: 0.0040 0.0080 Axial B: 0.0050 0.0070 Axial C: -0.1140 -0.1230 Trans D: -0.0347 -0.0358 Lateral E: 0.3315 0.3315 Lateral F: 0.5345 0.5340 GALILS Commanded: 12500 -1600 5300 47050 -8800 -8400 Actual: 12500 -1600 5300 47050 -8800 -8400 SETMIR VALUES PrimDesOrient: 0.0 -59.5 -9.15 -512.0 1906.3 PrimOrient: 1.07 -59.51 -9.21 -512.13 1906.31 SECONDARY: ---------- Focus: 0.0000 Air temp: 7.89 Altitude: 30.0 MIGS TONIGHT NOMINAL Axial A: -9.4580 -9.4520 Axial B: -9.4680 -9.4620 Axial C: -9.5000 -9.4990 Trans D: 0.0990 0.0910 GALILS Commanded: 4637500 4632650 4656200 0 -3400 Actual: 4607363 4607231 4608396 0 -3400 SETMIR VALUES SecDesOrient: 3657.0 0.0 0.0 0.0 42.22 SecOrient: 3657.35 -0.37 0.05 0.04 41.71 ---- Telescope Status ---- 23:25Z Started ventilation 00:05Z encl25m : open 07:30Z encl25m : closed No interlocks bypassed Status at: 0:52:58Z Telescope stowed at: 121.0, 30.0, 0.0 mount Instrument mounted: ECam Counterweights at: 422.5, 204.3, 443.8, 443.4 LN2 autofill systems: Connected and turned on 180L LN2 dewar scale: SP1 151.0 lbs, 18.0 psi ---- Software Used ---- Get Versions, 11/15/21, 05:30:41 -- STUI software: STUI : 1.7.13 alerts : 2.1.6 apo : FAILED boss : 6.0.1-alpha.0 -boss.specMec : 3.0.4 guider : 4.0.0 ecamera : FAILED fliswarm : FAILED hartmann : FAILED hub : 5.0.0a0 mcp : 2.1 -mcp.plc : 34 -mcp.azFiduci : v1_147 -mcp.altFiduc : v1_147 -mcp.rotFiduc : v1_147 sop : 0.1.0-alpha.0 tcc : 1.4.0 apogee : not availble apogeecal : not availble apogeeql : v1_7_0dev STUIAdditions : 3.1.9 -- done --