Date: Thu, 9 Oct 1997 10:20:52 -0600 (MDT)
From: Charles Corson
Subject: Re: 3.5 obslog 971008
On Thu, 9 Oct 1997, Tia Hoyes wrote:
=>
=>At the beginning of the evening Charles and I had a hard time properly
=>initializing the GUIDER after it had failed and we had to cycle the power
=>three times and finally resolved the problem using gctrack command.
=>The GUIDER continued to have problems later in the evening, and we elected to
=>use the slit viewer to guide.*
The guider was functioning when I left for the evening.
The problem with the guider had nothing to do with power cycling the
guider but rather, recovering from the guider software crash on the
guider mac and fully initializing the camera.
Recovery of the gcam funtion was delayed by some confusion about
the initialization.  The old system did not require the use of
"gctrack 0,0 phys" in order to expose and read images.  The new software
now requires this step in order to complete the initialization.
The guider was used successfully last night and it is not clear to
me why Tia elected not to use it.  If the software crashed on the
mac again, or the gcam funtions hung, then more understanding of
the failure will be needed.
A Problem Report was generated last night regarding the cloudcam
failure.  In short, communications between the cloudcam and marmot
are failing.
The fwhm reported for the guider are technically correct, but the
image quality is poor.  It is doubtful just how accurate the fwhm
as reported by IRAF is giving the elip. of the image.  You can
examine the guider image reported for 21:50,
tycho:/export/images/gimage108.
Charles
=>                               FOCUS LOG
=>                        OCTOBER   8,  1997
=>               Best    Telescope             WIND               Seeing
=>Time   Inst    Focus    AZ   El   Temp#    Dir   MPH    filter   FWHM"
=>19:35  DIS  +75(7031)  38.2 61.4  7.2/10.2 223.0 14.6     IN     1.59
=>20:25 GUIDER  44000  -115.4 59.5  7.5/8.9  217.8 10.8    open    .78
=>21:00  DIS +500(7454) -10.5 52.4  7.7/8.3  267.9 11.0     IN     1.54
=>21:50 GUIDER  51500   -97.3 42.1  7.9/8.1  232.9  7.7    open    .60
=>00:15  DIS +200(7064) 176.4 69.4  9.0/8.3  258.5  2.6     IN     1.24
=>
=># The first temp is air, the second is truss, both in degrees C.
=>