MDM Observatory 1.3m Telescope Observer's Report for 2001 Apr 26

Observer(s): Maritza Tavarez
Institution(s): University of Michigan

Instrument: CCD Direct - Echelle

Worked for 5 hours (part of the night)
Conditions were Mixed most of the night.
Problems were encountered, see the summary for details.

Seeing and Weather:
   Clouds from 8 pm until 12 pm.
   Beg: Patchy Clouds, Winds Calm
   Mid: Seeing 1.5 arcsec, Cirrus, Winds Calm
   End: Seeing 1.6 arcsec, Clear, Winds Calm

Observing Summary:

Spent the first half of night trying to observe through clouds.  
After midnight cleared up. Ran focus frames found focus to be :
8290 for R
8290 for Halpha
8270 for B
8280 for V


Trouble:
When using the autoguider, the tracking in North South direction
is off.  As a result most of my images trail in the N-S direction.

Question: What is the best way to determine a new track rate?


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Submitted on 2001 Apr 27 [4:29:38]