MDM Observatory 2.4m Telescope Observing Report for 2025 Oct 28 Observer(s): Meghna Sitaram, Anaelle Roc Institution(s): Columbia Instrument: CHaS Worked for 11 hours (all night) Conditions were Photometric most of the night. No equipment or software problems were encountered. Seeing and Weather: Beg: Clear, Winds Calm Mid: Clear, Winds Calm End: Clear, Winds Calm Observing Summary: Another night of great weather. Telescope and spectrograph performed well. No guider jumps. Collected data on our galaxy targets and tried out a new observational technique to facilitate sky subtraction. ------------------------------ Submitted on 2025 Oct 29 [6:08:11]