MDM Observatory 1.3m Telescope Observing Report for 2021 Jan 12 Observer(s): Yuming Fu, Jiangtao Li Institution(s): PKU, UMich Instrument: CCDS Worked for 11 hours (all night) Conditions were Non-Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Beg: Seeing 1.5 arcsec, Clear, Winds High Mid: Seeing 2.0 arcsec, Clear, Winds Moderate End: Seeing 1.8 arcsec, Clear, Winds Calm Observing Summary: The observation went well. No problem occurred. The seeing condition became poorer in the second half of the night. Wind speed was a bit high at first, and calm in the end. ------------------------------ Submitted on 2021 Jan 13 [20:36:07]