MDM Observatory 1.3m Telescope Observing Report for 2021 Sep 05 Observer(s): Xiaodi Yu Institution(s): Tsinghua University Instrument: Echelle Worked for 6 hours (most of the night) Conditions were Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Clouds from 19:40 until 24:00. Beg: Smoke, Winds Calm, no Mid: Clear, Winds Calm, no End: Clear, Winds Calm, no Observing Summary: The dome is close due to bad weather at the first of night. Dome opened at ~ 0 am. The observation went well. Dome closed and homed at ~ 6 am. ------------------------------ Submitted on 2021 Sep 6 [7:59:07]