Date: Thu, 25 Feb 2010 12:02:57 -0000 (UTC) Subject: 3.5m Night Log 20100224 From: "Gabrelle Saurage" Apache Point Observatory 3.5m Telescope Night Log Wednesday, February 24, 2010 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH -------------------------------------------------------------------- M.Klaene G.Saurage Echelle, 19:20 22:20 Fastcam, SPIcam INST SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DN START FINISH D B D B D B D B -------------------------------------------------------------------- EN01/O 18:05 06:27 2.2 7.2 0 0 0 3.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: G.Saurage Clear skies on and off beginning of the night shifting to complete overcast skies. Engineering. 19:50 eAur Echelle observations, mostly clear skies 20:08 hr1544, clouds coming and going for last exposure Fastcam data 21:15 wrt000alt60 21:50 wrt045alt60, skies quickly changing from complete overcast to thinning holes. 22:10 wrt090alt90 data not taken, total overcast skies 22:20 closed, local radar returns 23:15 Echelle inter-order light check. Unclear how to correctly determine the max and min values for the ratio from the directions. See files in tonight's directory labeled interorder.test.000x.fits. 23:55 Alt Slew testing with mirror covers closed. Object name "ALT Slew testing" for all these slews. Alt brake worked every time the slew failed and the telescope did not run away. Almost every failure was when slewing down lower than 50 degrees or so. Failed slews, with "Motion error too large" at the following UT times: UT06:55 from 80 to 14 degrees alt, failed at 58 degrees UT06:56 from 58 to 14, failed at 28 UT06:58 from 55 to 10, failed at 14 UT06:59 from 14 to 10, failed at 14 UT06:59 from 14 to 55, failed at 14 UT07:05 from 80 to 20, failed at 43 UT07:09 from 65 to 45, failed at 59 UT07:10 from 59 to 45, failed at 59 SPIcam flats, contamination check. All files located in UT100225/spicam/X.000x.fits named according to filter. First set of r, i, and z is with the Br Qtz, second set with Dim Qtz. SPIcam temps 19:00 184.2 04:30 179.9 Ion pump 0.02 ------- 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 -------------------------------------------------------------------------- 19:46 ECHELLE -99(-1198) -76 35 -0.9 -0.7 -0.7 -1.2 -1.0 ND3 1.49 21:06 FASTCAM 176( 440) 283 49 -1.3 -1.1 -0.9 -1.1 -1.1 1.53 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 34 2 12 282 (WNW) 837 mstly clr none 17:00 29 8 2 283 (WNW) 790 mstly clr none 18:00 26 6 10 241 (WSW) 837 mstly clr none 19:00 30 0 13 268 (W) 843 mstly clr none 20:00 31 3 12 237 (WSW) 778 mstly cldy none 21:00 31 1 13 255 (WSW) 834 mstly cldy none 22:00 30 1 19 265 (W) 900 cloudy none 23:00 30 0 15 263 (W) 1180 cloudy none 00:00 29 3 16 251 (WSW) 1005 cloudy none 01:00 29 4 23 276 (W) 897 cloudy none 02:00 29 6 22 267 (W) 920 cloudy none 03:00 29 8 21 279 (W) 814 cloudy none 04:00 28 9 16 274 (W) 880 cloudy none 05:00 28 11 11 282 (WNW) 750 cloudy 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: 1.7.0