MDM Observatory 2.4m Telescope Observing Report for 2023 Dec 15 Observer(s): Ignacio Cevallos-Aleman, Quinn Casey Institution(s): Columbia Univeristy Instrument: CHaS Worked for 12 hours (all night) Conditions were Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Beg: Clear, Winds Moderate Mid: Clear, Winds Light & Variable End: Clear, Winds Calm Observing Summary: Excellent conditions, moderate wind at the start of the night, low wind in the later part. We continued observing NGC 660, criss cross nebula, as well as NGC 2146 and ended the night with some observations of NGC2742A in SII. ------------------------------ Submitted on 2023 Dec 16 [6:21:10]