MDM Observatory 2.4m Telescope Observing Report for 2017 Oct 20 Observer(s): Fesen & Weil Institution(s): Dartmouth Instrument: Modspec + Echelle Worked for 10 hours (all night) Conditions were Non-Photometric most of the night. Problems were encountered, see the separate trouble report for details. Seeing and Weather: Clouds all night. Beg: Cirrus, Winds Moderate Mid: Cirrus, Winds Moderate End: Cirrus, Winds Moderate Observing Summary: Tonight was a better night of observing but still had its problems. Heavy cirrus at the beginning of the night, which cleared in the middle but then returned. The dome rotation is still an issue. We carefully watched the dome throughout the night to manually rotate because errors reached close to 18 degrees. We also had the dome runaway twice, it went approximately 90 degrees before turning around and returning to the correct position. ------------------------------ Submitted on 2017 Oct 21 [4:37:25]