MDM Observatory 2.4m Telescope Observing Report for 2021 Oct 10

Observer(s): Fesen
Institution(s): Dartmouth

Instrument: OSMOS

Worked for 8 hours (all night)
Conditions were Photometric most of the night.
No equipment or software problems were encountered.

Seeing and Weather:
   Beg: Seeing 1.0 arcsec, Clear, Winds Calm
   Mid: Seeing 0.90 arcsec, Clear, Winds Calm
   End: Seeing 0.95 arcsec, Clear, Winds Calm

Observing Summary:

Another perfect night...great seeing (< 1 arcsec all night), clear
skies, and no wind. Wish all nights were like this. 
A great run.

But tonight like a few nights ago, the telescope jumped 
North-South (!) by a few arcseconds during a long exposure
(~20 minutes). Happened when looking at the same object. Huh. 
Never saw that before. Otherwise, no instrument issues.

------------------------------

Submitted on 2021 Oct 11 [3:25:36]