MDM Observatory 2.4m Telescope Observing Report for 2015 Apr 27 Observer(s): Thorstensen Institution(s): Dartmouth Instrument: modspec + echelle Worked for 10 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, Clear, Winds Light & Variable Mid: Seeing 1+ arcsec, Clear, Winds Light & Variable End: Seeing 1+ arcsec, Clear, Winds Light & Variable Observing Summary: Very nice night, perfectly clear, though seeing started out mediocre. Possible problem with modspec shutter seemed to resolve itself, and notice that A/C didn't seem to cool the mirror yesterday (though mirror was plenty cool in the evening when the seeing was mediocre). ------------------------------ Submitted on 2015 Apr 28 [5:27:45]