From: Subject: 3.5m Night Log 20100613 Date: Mon, 14 Jun 2010 12:13:23 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Sun, June 13, 2010 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH -------------------------------------------------------------------- J.Gauthier J.Gauthier DIS 20:20 01:05 H.Weaver H.Weaver,C.Lisse, SPIcam 01:05 05:35 Y.Fernandez INST SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DN START FINISH D B D B D B D B -------------------------------------------------------------------- UC02/R 20:21 01:10 0 0 0 0 3.4 1.4 0 0 JH03/R 01:10 05:46 0 0 0 0 4.6 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: R.McMillan Clear all night, with moderate to good seeing. The telescope and instruments generally behaved well. I had a little running X11 to display images on obs1, but was able to use my laptop instead. TUI 1.7.4b1 worked well with images from all guiders, actively using dcam and gcam. There were a couple of fields with poor tracking -- one was descending from very high altitude in the west (82 down to about 78), and the poor tracking may have been due to the imperfections of our pointing model. The other field was at a more moderate altitude in the southwest at 7 UT -- the only possible cause I could find for the tracking drift was that the last couple of magnesensor crossings had not been applied, exacerbated by a sparse field requiring a long exposure on the slitviewer. Probably the guider could have compensated with shorter exposures, but since time was almost up there was no chance to try. The spectrum was still usable and the observers didn't think they had lost too much light since the problem only cropped up in the last few minutes of their exposure. Spicam 1900 173.0K 0100 169.0 0600 163.5K ------- FAILURE LOG ------- PROG INST FAILURE MODE TIME (SEDFNVOG) TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM ------------------------------------------------------------------------- 20:55 dis-slit 343( 618) -95 76 12.8 13.8 13.4 13.1 13.1 1.60 23:37 dis-slit 143( 361) -44 46 12.2 12.2 12.5 11.5 12.1 1.40 01:28 SPICAM 123( 549) -43 61 11.7 11.7 12.0 11.1 11.6 R 0.85 01:32 NA2gdr -186(29813) -44 60 11.8 11.7 12.0 11.1 11.5 R 0.90 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 20 20 22 249 (WSW) 673 clear none 17:00 20 20 24 269 (W) 808 clear none 18:00 18 18 18 263 (W) 934 clear none 19:00 19 19 14 269 (W) 1000 clear none 20:00 19 19 12 263 (W) 1042 clear none 21:00 18 18 11 278 (W) 1114 clear none 22:00 18 18 13 272 (W) 1170 clear none 23:00 18 18 8 258 (WSW) 1151 clear none 00:00 17 17 8 263 (W) 1087 clear none 01:00 16 16 9 266 (W) 1157 clear none 02:00 15 15 11 264 (W) 1084 clear none 03:00 16 16 15 294 (WNW) 1100 clear none 04:00 17 17 17 279 (W) 1251 clear none 05:00 19 19 12 265 (W) 1166 clear none 06:00 22 22 7 265 (W) 1215 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: 2.11.1 Current TUI version: 1.7.3