MDM Observatory 2.4m Telescope Observing Report for 2021 May 25 Observer(s): Melso/Sitaram Institution(s): Columbia University Instrument: CHaS Worked for 2 hours (part of the night) Conditions were Mixed most of the night. Problems were encountered, see the separate trouble report for details. Seeing and Weather: Clouds all night. Beg: Patchy Clouds, Winds Calm Mid: Overcast, Winds Calm End: Overcast, Winds Calm Observing Summary: Observed for a few hours at the beginning of the night while the clouds were still broken. Closed when the sky became completely overcast. We took some calibration images with dome closed (darks, lamps). We had issues with the guider again and observed in open loop. The MaximDL software froze so we unplugged the FLI camera power as instructed. However, when we went to restart the software we continued to get an error: Error opening camera 1. The camera settings are incorrect. Daily log: 1 clang ------------------------------ Submitted on 2021 May 26 [4:48:27]