Date: Fri, 23 Nov 2012 13:38:04 -0000 (UTC) Subject: 3.5m Night Log 20121122 From: "Alysha Shugart" Apache Point Observatory 3.5m Telescope Night Log Thursday, November 22, 2012 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH -------------------------------------------------------------------- K.France A.Youngblood ECHELLE 17:00 00:10 D.Feuillet M.Hayden ECHELLE 00:10 06:36 INST SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DN START FINISH D B D B D B D B ---------------------------------------------------------------- CU04/R 17:07 00:10 0 0 0 0.1 0.0 7.0 0 0 NM07/R 00:10 06:32 0 0 0.5 0 3.7 2.1 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: A.Shugart The weather was good and clear all night. No other problems than what was in the failure log. Russet and I noticed that TUI was not accurately representing the placement of the echelle slitviewer filter wheel. I went upstairs, maunally moved the wheel to the clear "1" position, and did a few test movements. It moved well in both directions. No problems afterwards. During afternoon checkout, I must have forgotten to completely close the pressure valve on echelle's dewar, and it went out of temperature range. I had to do a force fill, and because the tanks were less than full, it took quite a bit of time. No problems after that. I checked that the temperature was at -120 during morning checkout, and that the level of the main tank was above 1/2. Everything was good. ------- FAILURE LOG ------- PROG INST FAILURE MODE TIME (SEDFNVOG) TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- CU04 E I/H 18:21 18:30 Manual adjustment of filter wheel. NM07 E I/H 02:05 02:35 Force fill of echelle when outside temp range. ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM -------------------------------------------------------------------------- 18:59 ECHELLE 409( -904) 28 27 7.2 7.5 7.6 7.5 6.7 ND3 0.92 21:46 ECHELLE 424( -955) 13 41 7.6 6.7 7.2 6.8 7.2 ND3 1.08 23:31 ECHELLE 457( -958) -108 61 7.2 6.5 7.0 6.6 6.6 ND3 0.91 01:15 ECHELLE 438(-1019) -135 44 3.9 5.2 5.7 5.3 4.1 ND2 1.60 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 46 24 14 322 (NW) 117 clear none 17:00 45 22 8 15 (NNE) 116 clear none 18:00 45 18 10 3 (N) 86 clear none 19:00 46 9 8 11 (N) 92 clear none 20:00 45 7 14 14 (NNE) 95 clear none 21:00 46 6 9 25 (NNE) 80 clear none 22:00 46 9 15 18 (NNE) 144 clear none 23:00 45 8 19 63 (ENE) 69 clear none 00:00 40 12 25 61 (ENE) 126 clear none 01:00 36 15 20 76 (ENE) 233 clear none 02:00 33 19 25 76 (ENE) 492 clear none 03:00 33 20 20 77 (ENE) 618 clear none 04:00 33 20 14 77 (ENE) 573 clear none 05:00 32 20 15 78 (ENE) 570 clear none 06:00 28 21 18 73 (ENE) 547 clear none Note: the wind was coming from the azimuth listed. The convention used is north=0 degrees, east=90 degrees. The dust count is particles > 1u per 0.1 cubic feet. TELESCOPE STATUS Telescope drives operational. Current TCC version: 2.15.0 Current TUI version: 1.9.5