From: Russet McMillan Subject: 3.5m Night Log 991217 Date: Sat, 18 Dec 1999 07:05:03 -0700 (MST) FRIDAY DECEMBER 17, 1999 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH York Adler SPIcam 12/17 16:57 17:57 Krisciunas Krisciunas SPIcam 12/17 17:57 18:57 Duncan Duncan Echelle 12/17-18 18:57 00:10 Brown Brown Echelle 12/18 00:10 06:02 INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B UC11/R 16:57 17:57 - - - - - - 1.0 - 0 UW02/R 17:57 18:57 - 0 - 0 - 1.0 0 - 0 UC01/R 18:57 00:10 - 0 - 0.3 - 4.9 0 - 0 WS01/R 00:10 06:02 0 0 0 0 3.9 2.0 0 0 0 (note: times listed include instrument change time) ACTIVITY LOG (* means a trouble report has been issued or appended to) 1st half observing specialist: Loomis, Deglman The telescope was opened at 16:30 MST. Adler observed, although their time was spent watching us take twilight flats, so not very exciting for them. After Adler, Kevin Krisciunas observed for UW02 with SPIcam, then Doug Duncan and Louisa Rebull observed for UC01 with the Echelle. We lost a little time during the evening, due to a problem related to the APO internet router. Craig got us up and running again. 2nd half observing specialist: McMillan Second half started out with high humidity and poor seeing, but both improved markedly when the wind shifted to the west. The telescope tracked well, and the echelle showed exemplary behavior. The tertiary rotation also worked nicely when we switched briefly to spicam for field identification. OBSERVER COMMENTS Brown (WS01): I worked the second half of Friday night (17/18 December) with the echelle on the 3.5-meter, and despite not-very-good seeing, it's very good to have the telescope back. My heartfelt thanks to everyone at the site and elsewhere for their work and getting us back into operations. We (Russet at the telescope and myself remotely) used the fast tertiary rotation capacity to get a SPIcam image for identification and acquisition in a cluster field and then rotating back to the program instrument, echelle. It works very well, and it's much faster for confident identification than paddling around in a cluster with a 1.2 by 0.8 arcminute field. FOCUS LOG DECEMBER 17 1999 Wind Time Inst Focus Az El #Temp Dir MPH filt FWHM " 17:55 SPIcam -100(640) 283 44 0.6/1.1 40 23 B 1.5 18:15 guider -100(620) 119 45 0.7/0.8 48 17 R+ND2 2.0 19:05 Echelle 0(-181) 150 57 -0.1/0.2 62 10 ND2 3.2 21:25 Echelle 200( ) 131 40 -3.1/-3.0 76 17 ND2 4.0 00:35 Echelle 50(-253) 199 43 -3.9/-4.1 76 9 ND2 1.7 04:05 Echelle 100(-161) 223 43 -2.6/-3.1 290 13 clear 1.0 #First temp is air, second temp is telescope. WEATHER DECEMBER 17 1999 Wind Time Temp F Dewp F MPH Direction Dust Sky Precip. 16:01 35 15 20 15 (NNE) 186 clear none 17:01 33 17 20 25 (NNE) 546 clear none 18:01 33 12 22 35 (NE) 1115 clear none 19:01 32 12 8 86 (E) 1744 clear none 20:01 28 16 25 74 (ENE) 961 clear none 21:01 27 17 21 67 (ENE) 684 clear none 22:01 26 18 20 70 (ENE) 1316 clear none 23:01 26 18 16 73 (ENE) 1015 clear none 00:01 26 18 13 75 (ENE) 1480 clear none 01:01 25 19 4 78 (ENE) 911 clear none 02:01 28 15 4 264 (W) 299 clear none 03:01 28 15 8 267 (W) 331 clear none 04:01 28 16 8 269 (W) 373 clear none 05:01 27 16 8 286 (WNW) 325 clear none 06:01 28 16 7 299 (WNW) 311 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 > 1 micron per 0.1 cu. ft. TELESCOPE STATUS Primary, secondary, and tertiary mirrors in place and collimated. Primary support system operational. Mirror ventilation system in place. Telescope drives operational. Current Remark version: 2.55b5. Current guide software version: GIm Ctrlv3.0b27. - Karen Loomis, Russet McMillan