Date: Fri, 19 Jan 2001 07:32:40 -0700 (MST)
From: Jack Dembicky
Subject: 3.5m Night Log 20010118
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                      Thursday, January 18th, 2001
                                                          ACTUAL
  ASTRONOMER    OBSERVER(S)           INSTRUMENT       START  FINISH
 --------------------------------------------------------------------
 S.Anderson     L.Holmes,S.Anderson   SPIcam           19:40  11:57
 R.Walterbos    R.Walterbos           SPIcam           00:07  06:40
   INST        SCHEDULED     WEATH     EQUIP     OBS    DAY   NOTUSED
  I/RO/DN    START FINISH   D    B    D    B   D    B   USE   D    B
 --------------------------------------------------------------------
 UW05/R      18:20  00:10  1.3   0    0    0  4.5   0    0    0    0
 NM04/O      00:10  06:08   0    0    0   0.5 2.9  2.6   0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
  Observing Specialist, 1st Shift: Noel Camron Hastings
    Due to high humidity, clouds and a dry snow from a blue sky, we did
not open on time. I replaced the DIS lN2 dewar today and filled the
Echelle, leaving one spare. The NA2 dewar is getting low as well. We are
fine for nitrogen for at least 3-5 days from now. There is also a LOT of
ice building up on the Echelle. I tried to gently remove some today, but
a lot remains still.
    The weather conditions did allow us to open until 19:30 MST. I had to
chip a small patch of ice off of either side of the slit door runners on
the catwalk. After this ice was removed the doors opened normally. The
motor squealing was heard during the beginning of the first slew and then
no more for the rest of the night, although we mainly tracked and did
very little slewing.
  Observing Specialist, 2nd Shift: Jack Dembicky
Everything was running smoothly when I took over.  I changed over to
filter wheel #4 for Rene at instrument change over (00:00) and gave the
instrument to him. Clear and very cold tonight.  The telescope became lost
during the middle of the night when I issued a command to the tcc at the
wrong time.  This caused a series of guider corrections to start
accumulating an the telescope became "lost". A track/pterr quickly fixed
the problem.
At the end of the night (during the observers last exposure) the
telescope again became lost (for reasons this time not known). I did not
have time to resolve a fix for the problem due to the observers need to
take morning flats (the telescope was operable enough to take those).  I
tried the same fix I did earlier but it did not work this time. A
detailed PR was submitted. The telescope stowed in what appeared to
be it's normal stow Alt/Az position.  Other than those two problems every
thing else ran smoothly all night with seeing from  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 is 2.4.1
  Current MC version: v1_7_3.
  - Noel Camron Hastings, Jack Dembicky