Subject: 3.5m Night Log 20050608
Date: Thu,  9 Jun 2005 06:09:44 -0600 (MDT)
From: bketzeba@apo.nmsu.edu (Bill Ketzeback)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Wednesday, June 8, 2005
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 C.Churchill     C.Churchill,G.Kacprzak SPIcam         20:15 06:10
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 NM05/O      21:13 04:51    0    0   0.9   0   5.7  1.0   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: B.Ketzeback
 Clear skies until 0215 when the sky quickly became covered with a thin layer
 of cirrus for the remainder of the night. Seeing was excellent to good for
 the entire night. We lost 2 very long exposures when the telescope caused
 image jumps. The reason could not be determined either during occurance since
 nothing obvious appeared on the dataq and I was running a test version of
 TUI which made keeping a running track of the magnitude of guider offsets
 difficult. The temperatures did not appear to be changing and all of the
 other images showed nice round/in focus stars. The only explaination I can
 come up with, outside moth guts all over the drive surfaces, would be that
 due to the long integration times it is very possible that lack of incremental
 focus adjustments (we sat on the same target all night basically) was the
 cause of the two image jumps.
                      ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
      (SEGDFNVO)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
 NM05     S          T/H     01:09  01:37   Image Jump
 NM05     S          T/H     03:54  04:20   Image Jump
                ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 21:27 SPIcam      -25(1639)   92  52  14.6/15.8  222  15   r     1.12
 00:59 SPIcam      100(1640)   229 77  14.6/14.5  266  9    r     0.66
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    65    15     17   238  (WSW)    695   clear     none
     17:01    69    17     18   271  (W)      547   clear     none
     18:01    68    17     21   226  (SW)     563   clear     none
     19:01    64    12     15   277  (W)      563   clear     none
     20:01    61    15     19   224  (SW)     565   clear     none
     21:01    58    16     14   217  (SW)     631   clear     none
     22:01    58    17     16   232  (SW)     723   clear     none
     23:01    58    18     10   261  (W)      870   clear     none
     00:01    57    15     11   268  (W)      637   clear     none
     01:01    58    13     12   268  (W)      599   clear     none
     02:01    58    15      9   271  (W)      615  cloudy    cirrus
     03:01    57    15     12   275  (W)      631  cloudy    cirrus
     04:01    56    15     13   275  (W)      671  cloudy    cirrus
     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 Remark version: 2.85b
      Current TCC version: 2.7.2  Current TUI version: TUI 0.94