Date: Sat, 28 Apr 2001 06:35:32 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20010427
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                        Friday, April 27th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 --------------------------------------------------------------------
 G.Meurer      G.Meurer, M.Seibert     DIS-High        07:25  01:04
 J.Holtzman    J.Holtzman, C.Aars      DIS-Med         01:04  04:15
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 JH03/R      20:39 01:00    0    0    0    0   0.9  3.5   0    0    0
 NM04/O      01:00 05:22   1.1   0    0    0   3.2   0    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: Jack Dembicky
 Opened louvers and turned on telescope cooling fans at 17:30 under
 partly cloudy skies. Closed louvers to do DIS cal checkout at
 18:15 and so enclosure would be dark and for the observers to do cals
 and biases at 19:15.
 Opened the enclosure and louvers at 20:40, when the observers finished
 with their lamps, to focus the telescope.
 The first half observers were trying a drift technique tonight with DIS
 and seemed to be having success with it but need some time to asses
 the data taken to be sure.
 The seeing was variable between 1.2 and 1.5 arc sec for most of the 1st
 half of the night.
 The guider was not focused at the start of the night since the 1st half
 observers said they would not need it.  They decided to use the guider
 about 30 mins before the end of their run and the guider focus was OK,
 but probably not optimal.  For the 2nd half, Jon decided that he would
 put off focusing the Guider since some of his objects were setting.  The
 guider seemed well focused at after we checked the slitviewer focus at
 02:30, but the guider focus routine was not employed.
 The seeing improved after 02:30 to the point where it was too good,  1u per 0.1 cubic feet.
                              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: 2.62. Current
  guide software version: GIm Ctrlv3.0b27. Current TCC version: 2.5.1
  Current MC version: v1_7_3.