From: Tracy Naugle Subject: Re: [sloan-25mlog 5736] 2.5m obslog 20211101 (SJD 59520) Date: Tue, 2 Nov 2021 06:19:20 -0600 The ODH sensor was unplugged because the sensor is going in and out of it ra= nge. New one has been order and waiting on there arrival. Thanks Tracy Naugle Sent from my iPhone > On Nov 2, 2021, at 4:51 AM, kpan@apo.nmsu.edu wrote: >=20 > =EF=BB=BF > APACHE POINT OBSERVATORY SDSS 2.5M >=20 > OBSERVING LOG > Monday November 01, 2021 >=20 > (SJD 59520) >=20 > ---- Observing Team ---- >=20 > Kaike Pan > Viktor Malanushenko (R) >=20 > Aidan Gray (FSC focal plane scan) > Jack Dembicky (tests on track pterr and track RA, Dec commands with 35m) >=20 > ---- Observing Plan ---- >=20 > FSC focal plane scan.=20 > More tests on images shifts between two slew commands. >=20 > ---- Observing Summary ---- >=20 > We completed a couple of tasks: > 1. Run a quick test on 25m telescope. On 35m telescope, there is NO star i= mage shift between "tcc track pterr" and "tcc track RA, Dec". > 2. Completed a focal plane scan in "r" band. > 3. explored the star image shift puzzle with both fsc instrument block and= spectro instrument block, the spectro block doesn't change since April 2021= , combined with several pointing model. The oldest one back to 2019. Star im= age shift on all instrument and pointing model combinations. > 4.Test /NoRefCoefficients option in track commands, it cannot count for th= e big image shifts seen (see log). > 5. We tracking a star at AZ=3D120, alt=3D55 for 40 minutes, the star image= only drift 9 pixels, about 0.7 arc-second.=20 >=20 > Notes: > =3D=3D=3D=3D=3D > The connector for DHO sensor in the enclosure is found unplugged.=20 >=20 > ---- Observing Log ---- >=20 > Afternoon: > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > Logout ports and restarted bossICC and TCC. >=20 > Apogee evening cals and FPI data were taken, checked. They are good. >=20 > BOSS bias and dark are good. >=20 > 23:55Z: started ventilation. > 00:50Z: open the enclosure.=20 > Night: > =3D=3D=3D=3D=3D=3D > Jack kindly on 35m ran a short test for us during evening twilight. Er sle= wed the telescope with "tcc track /pterr 120, 30 obs /rotty=3Dobj /rota=3D0"= , it points to a low proper motion star, DB+38 273. The telescope's three ax= es are AZ=3D119.4, Alt=3D30.1, rot=3D10.5. The star image is at (206.4, 187.= 5). Then we re-slewed the telescope with the TUI slew wedge (basically a tcc= track RA, Dec command). then took another image, the star image does NOT sh= ift (within 1 pixel, 0.5'/pixel). >=20 > 01:20Z: try to focus the telescope, but find that the focus was drifting, w= e decided to wait 30 minutes. >=20 > 02:30Z: resume the process to focus the telescope. The best focus is at 47= 5 um, with FWHM at 10 pixels, 0.75". > 04:10Z: find focus seems drifted significantly. Redo the telescope focus, g= ot 315 um. The FWHM is at 0.7". >=20 > 02:45Z: start focal plane scan with the filter 'r'. > 05:50Z: completed the focal plane scan. > 05:55Z: setup for tests on image shifts between two slew commands. > refocus the telescope. The best focus is around 300 um. >=20 > tcc track/pterr 120, 55 obs /rotty=3Dobj /rota=3D0 /magRange=3D(13.0,13.5)= =20 > RA=3D4:52:34.88, Dec=3D38:30:19.64 > star image at (1110, 984) >=20 > tcc track/pterr 120, 55 obs /rotty=3Dobj /rota=3D0 /magRange=3D(13.0,13.5)= /NoRefCoefficients > Star image at the same position, (1110, 984) >=20 > tcc track 73.145314,38.505520 icrs=20 > RA=3D4:52:34.88, Dec=3D38:30:19.70, star image at (776, 991) >=20 > tcc track 73.145314,38.505520 icrs /NoRefCoefficients > RA=3D4:52:34.88, Dec=3D38:30:19.70, star image at (787, 991) >=20 > tcc track/pterr 120, 30 obs /rotty=3Dobj /rota=3D0 /magRange=3D(13.0,13.5)= =20 > RA=3D7:38:19.94, Dec=3D34:27:01.29, star image at (1096, 1009) > with /NoRefCoefficients, star at (1087, 1009) >=20 > tcc track 114.583061,34.449651 icrs star at (202, 1302) > with /NoRefCoefficients flag, star at (211, 1302) > slew the telescope away, then slew back to check if fiducial crossings mak= e any difference. They don't. >=20 > Looks like that big offsets are not introduced by the refraction nor by th= e difference on fiducial corrections. >=20 > Try spectro instrument block. > tcc set inst=3Dspectro > tcc track/pterr 120, 55 obs /rotty=3Dobj /rota=3D0 /magRange=3D(13.0,13.5)= =20 > RA=3D4:52:34.88, Dec=3D38:30:19.87, star at (1087, 1032) > tcc track 73.145314,38.505520 icrs, star at (803, 1010). Still see large s= hifts. >=20 > tcc track/pterr 120, 35 obs /rotty=3Dobj /rota=3D0 /magRange=3D(13.0,13.5)= =20 > RA=3D7:10:01.01, Dec=3D38:31:25.46 star (AZ=3D114.4, alt=3D42.5). Star at (= 1070,1050) > tcc track 107.507653,38.529459 icrs brings star to (614, 1454) >=20 > the spectro instrument block has not been modified since May. So, the inst= rument block should not be the cause. >=20 > with the pointing model from August 25, 2021. > tcc track/pterr 120, 55 obs /rotty=3Dobj /rota=3D0 /magRange=3D(13.0,13.5)= =20 > RA=3D7:10:01.01, Dec=3D38;31:25.46, star at (1381, 954) > with the tcc track RA, Dec, star shifted to (812, 730)? >=20 > Sounds like that star images shift between two slew commands with several i= nstrument blocks, several pointing models. > 9:40Z: tracking a star to see how much a drift in 30 minutes. > tcc track/pterr 120, 55 obs /rotty=3Dobj /rota=3D0 /magRange=3D(12.0,13.0)= =20 > RA=3D8:32:50.75, Dec=3D43:10:45.29 > 9:40Z at (1087, 1023) > 9:42Z no drift > 9:48Z no drift > 9:55Z: no drift > 10:00Z: no drift > 10:07Z > 10:15Z: > 10:20Z: (1096, 1023) > The star only drift 9 pixels, 0.7". > 10:40Z: close. > 10:50Z: start morning cals. >=20 >=20 >=20 >=20 >=20 >=20 >=20 > ---- Mirror Numbers ---- >=20 >=20 > PRIMARY: > -------- > Scale: 1.000000 >=20 > MIGS TONIGHT NOMINAL > Axial A: 0.0060 0.0040 > Axial B: 0.0080 0.0310 > Axial C: -0.1220 -0.1180 > Trans D: -0.0358 -0.0362 > Lateral E: 0.3315 0.3315 > Lateral F: 0.5345 0.5340 >=20 > GALILS > Commanded: 12500 -1600 5300 47050 -8800 -8400 > Actual: 12500 -1600 5300 47050 -8800 -8400 >=20 > SETMIR VALUES > PrimDesOrient: 0.0 -59.5 -9.15 -512.0 1906.3 > PrimOrient: 1.07 -59.51 -9.21 -512.13 1906.31 >=20 > SECONDARY: > ---------- >=20 > Focus: 0.0000 > Air temp: 10.78 > Altitude: 30.001777293182183 >=20 > MIGS TONIGHT NOMINAL > Axial A: -9.4530 -9.4440 > Axial B: -9.4650 -9.4730 > Axial C: -9.4990 -9.5010 > Trans D: 0.0950 0.1000 >=20 > GALILS > Commanded: 4630150 4625000 4647350 -50 -3450 > Actual: 4607256 4607193 4607061 -50 -3450 >=20 > SETMIR VALUES > SecDesOrient: 3657.0 0.0 0.0 0.0 42.22 > SecOrient: 3656.93 0.04 -0.04 -0.03 42.65 >=20 >=20 >=20 > ---- Telescope Status ---- >=20 >=20 > 00:25 Started ventilation > 01:05 encl25m : open > 10:40Z encl25m : closed >=20 > No interlocks bypassed >=20 > Status at: 11:00 > Telescope stowed at: 121.0, 30.0, 0.0 mount > Instrument mounted: cartridge =3D fsc =20 > Counterweights at: 558, 558, 577, 577 =20 > LN2 autofill systems: Connected and turned on > 180L LN2 dewar scales: SP1 201 lbs, 21.1 psi >=20 >=20 >=20 >=20 > ---- Software Used ---- >=20 > STUI : 1.7.13 > alerts : 2.1.6 > apo : 3.0.0 > 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 >=20 > ____________________________________________________________ > Logs of Nightly APO Activities > https://trac.sdss.org/tracmailman/browser/private/sloan-25mlog/index.html