MDM Observatory 2.4m Telescope Observing Report for 2025 May 28 Observer(s): Ignacio Cevallos-Aleman Institution(s): Columbia University Instrument: CHaS Worked for 8 hours (all night) Conditions were Mixed most of the night. No equipment or software problems were encountered. Seeing and Weather: Clouds all night. Beg: Cirrus, Winds Light & Variable Mid: Patchy Clouds, Winds Calm End: Patchy Clouds, Winds Calm Observing Summary: Scattered clouds coming in and out throughout the night, spent most of the night on calibration nebula targets as the weather allowed. ------------------------------ Submitted on 2025 May 29 [5:54:14]