MDM Observatory 1.3m Telescope Observing Report for 2009 Mar 10

Observer(s): John Thorstensen
Institution(s): Dartmouth

Instrument: Templeton ccd direct

Worked for 8 hours (all night)
Conditions were Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   Beg: Seeing 1.5 arcsec, Patchy Clouds, Winds Light & Variable
   Mid: Seeing 1.5 arcsec, Clear, Winds Light & Variable
   End: Seeing 1.5 arcsec, Clear, Winds Light & Variable

Observing Summary:


Took two long time series; I was also running the 2.4m.  

In the middle of the night I did a little engineering, moving the
guide probe around and trying to figure out why my guide-star 
finding program (which works perfectly on the 2.4m) was failing
on the 1.3m, using the manual's numbers for the geometry.  I 
determined the guide probe scale to be roughly 0.0837 arcsec
per step, whereas the manual has 0.099 arcsec per step. 
After correcting the scale factor I could move consistently
from one star to another in a test field.  The conversion 
factors used in the MIS gui between motor steps, millimeters, 
and arcsec all appear to be incorrect.

I had a little drive trouble, described in trouble report.

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Submitted on 2009 Mar 11 [7:02:47]