MDM Observatory 2.4m Telescope Observing Report for 2025 Oct 27 Observer(s): Meghna Sitaram, Anaelle Roc, David Schiminovich Institution(s): Columbia Instrument: CHaS Worked for 10.5 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: Great first night with CHaS! Fantastic weather. Telescope and spectrograph performed well. Observed a few different galaxy and nebula targets. We did experience some random small jumps in the pointing which caused us to lose guiding but it stopped once we switched targets. ------------------------------ Submitted on 2025 Oct 28 [6:00:48]