Date: Tue, 28 Apr 1998 07:06:37 -0600 (MDT)
From: Karen Gloria
Subject: 3.5-m obslog 980427
                          MONDAY APRIL 27, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Staff             Staff              SPIcam   4/27-28  23:40 01:10
Beck-Winchatz  Beck-Winchatz,        SPIcam     4/28   01:10 04:50
		Anderson
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
EN00/S     21:19 01:10   1.5   0    0    0   2.4  0.1   0    0    0
UW02/R     01:10 04:50   3.7   -    0    -    0    -    0    0    -
(note: times listed include instrument change time)
                               ACTIVITY LOG
(* means a trouble report has been issued or appended to)
The telescope was opened at 23:40 MDT.  The observers were myself for
EN00 and Bernhard Beck-Winchatz and Scott Anderson for UW02.
The primary mirror support system came on-line OK when it was powered
up this morning.  The encoder for the altitude axis had to be replaced
this afternoon/evening.  The old one was found to be inoperable during
telescope tests early afternoon.  Site staff were able to diagnose and
repair (a big job) in time for the second half of the night.  Jon
Davis stayed on until midnight to accomplish this.  Drop in
engineering time was designated for the first half of the night.  The
first half observers who were bumped were PU01 - Turner, and WS01 -
Secker.
After the telescope got on the sky, I ran pointing and collimation
tests.  UW02 observed for the remainder of the night.
			     OBSERVER COMMENTS
                                 FOCUS LOG
                               APRIL 26 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El   #Temp    Dir MPH  filter  FWHM "
23:55 SPIcam  -200(5798) 144  73  0.0/0.4    33  13    g'     1.2
00:45 SPIcam  -200(5769) 189  74 -0.3/-0.3   47  20    g'     1.2
02:25 SPIcam  -200(5772) 327  64 -0.6/-0.9   71   6    u'     1.4
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                              APRIL 26 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.	  Dir.       Dust     Sky       Precip.
     16:01    34    25      8    64  (ENE)    722  mstly cldy    none
     17:01    35    24      4    73  (ENE)    810  mstly cldy    none
     18:01    35    24      1    49  (NE)     854  mstly cldy    none
     19:01    36    22      0   239  (WSW)   1211  mstly cldy    none
     20:01    34    24      6    87  (E)      800  mstly cldy    none
     21:01    32    22     15    68  (ENE)    833  ptly cldy     none
     22:01    31    22     14    61  (ENE)    755    clear       none
     23:01    33    17      9    56  (NE)    1029    clear       none
     00:01    32    18     15    19  (NNE)    944    clear       none
     01:01    31    18     17    49  (NE)     866    clear       none
     02:01    31    19     19    31  (NNE)    881    clear       none
     03:01    31    20     13    55  (NE)     882    clear       none
     04:01    30    19     12    77  (ENE)    787    clear       none
     05:01    30    21     23    67  (ENE)    757    clear       none
     06:01    29    22     24    57  (NE)     619    clear       none
     07:01    30    22     21    58  (ENE)    732    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: 2.39.
Current guide software version: GIm Ctrlv3.0b11.
-Karen