MDM Observatory 2.4m Telescope Observing Report for 2018 Sep 29

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

Instrument: modspec + echelle

Worked for 10 hours (all night)
Conditions were Mixed most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 1 arcsec, Patchy Clouds, Winds Light & Variable
   Mid: Seeing 1 arcsec, Clear, Winds Light & Variable
   End: Seeing 1 arcsec, Patchy Clouds, Winds Light & Variable

Observing Summary:

Ran into a focus issue early in the night and ended up with a
fixed-focus telescope for the night, which had little effect since
the focus was about the same as last night.

The night started out with high cumulus coming through, but those
went away and it was nicely clear until about 2 AM, when fast-
moving high clouds from Hurricane Rosa started drifting over.
These went away fairly quickly but brightly-lit high cumulus
returned, very patchy, for the remainder.  Finally closed down
just after the start of twilight.  Seeing was good, despite
the focus issue.  Mindful of the forecast for tomorrow I 
managed to finish off most of what I'd started in this run.

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Submitted on 2018 Sep 30 [5:41:20]