Date: Wed, 8 Mar 2000 03:42:10 -0700
From: Dan Long
Subject: 2.5m obslog 000307 (MJD 51611)
                           TUESDAY MARCH 7, 2000
                     APACHE POINT OBSERVATORY SDSS 2.5M
                               OBSERVING LOG
                                (MJD 51611)
OBSERVING TEAM:
===============
		 Dan Long       1st     (APO)
		 Steph Snedden	1st	(APO)
		 Jeffrey Hayes  2nd	(APO)
		 Ellyne Kinney  2nd	(APO)
                  Eric Neilsen -- PT  	(JHU)
        Visitors:
		 Andy Connolly		(FNAL)
			  THE PLAN:
			  =========
     No operations due to inclement weather and hazardous road
conditions which prevented observing team from coming in.
		     SYNOPSIS FOR NIGHT:
		     ===================
Closed all night.  No operations.
		      TELESCOPE STATUS:
   		      =================
	DIMM:
	-----
		No data.
	INTERLOCKS:
	-----------
		None bypassed.
	SOFTWARE USED:
	--------------
		IOP/SOP: v3_10_1
		Watcher: v2_6_7
		MCP: v4_0_1
	WEATHER SYNOPSIS (see below for hourly data):
	=============================================
     Mostly cloudy to cloudy first half. Clearing second half.  Winds
often over limit.  Light snow early.  Blowing snow much of the night.
	GENERAL COMMENTS (see Problems below for details):
	==================================================
    Since the Sunspot Highway was very treacherous it was decided that
operations would be suspended for the night.  Andy Connolly who is
staying on site was instructed on how to fill the spectrographs, so
that they will remain cold.
    The imager safed itself during the day when a power hit stopped
the flow of coolant for a while.  The camera warmed enough before the
LN2 system was restarted that it was decided to leave it in safe mode
until someone could get to the site in the morning and restart
cooling.  The watchdog timeout was not a critical error and so the
watcher did not warn as loudly as it could have of this problem.
Robert Lupton has changed the watcher to correct this.
    When I logged on this evening, I found both galils lost (
consistent with a power hit ).  I homed the optics, but I couldn't
put the telescope at 87 deg to relax the primary.  Even so, the MiG
readings were pretty close.
	DATA ACQUISITION (see IOP/SOP output below):
	===========================================
			IMAGING:
			--------
None.
		      SPECTROSCOPY:
	              -------------
None.
                          MIRROR NUMBERS
   			==============
      Primary:
     setmir( cmd ):      0  -3.9   3.9   213.5   213.5
      galil( act ):   4850  -2350   100  -9500   50  -100
      linear gauges
		      Tonight	Nominal
    1 = Axial A      =   1.9305	1.9315
    2 = Axial B      =   0.5565	0.5570
    3 = Axial C      =   0.5565	0.5570
    4 = Transverse   =   0.4080	0.4075
    5 = East Lateral =   1.9000	1.8980
    6 = West Lateral =   0.4000	0.3990
      Secondary: ( inst=----- focus=---- alt=---- deg  T=--- C)
      setmir( cmd ):
      setmir( act ):
      galil ( act ):   0     0     0   -5350  -5350
      linear gauges
    1 = Axial A      = -0.048
    2 = Axial B      = -0.036
    3 = Axial C      = -0.046
    4 = Transverse   = -0.034
			   LN2 SCHEDULE:
			   =============
Imager dewar changed at 09:00.
Spectro dewars filled around 20:00.
			   WEATHER DATA:
			   =============
                                 Wind
       Time   Temp F Dewp F  MPH   Direction    Dust      Sky Precip.
      16:01    22    20     33   249  (WSW)    447
      17:01    21    20     45   257  (WSW)    569
      18:01    21    19     31   254  (WSW)    210
      19:01    20    17     25   257  (WSW)    520
      20:01    19    17     24   268  (W)      163
      21:01    19    17     24   265  (W)      299
      22:01    18    15     13   276  (W)      507
      23:01    17    14     13   279  (W)      406
      00:01    17    12     12   295  (WNW)    377
      01:01    19     9     14   343  (NNW)    197
      02:01    22     3     20   306  (NW)     188
      03:01    24     0     14   314  (NW)     116
			 PROBLEMS IN DETAIL:
			 ===================
		       DATA LOGS FROM IOP/SOP:
		       =======================