Date: 2018 Feb 10 UT Observers: Danielle Berg, Malinda Baer TO: Steve Allanson SA: Olga Kuhn Moon phase: 3rd quarter Summary: Training OSU undergraduate, Malinda Baer on MODS. Weather was clear for first part of the night. Then intermitten cloudys rolled in, with variable seeing. Focused on OSU_ASASSN targets since they don't require clear skies. Competed Programs: ND_paloma OSU_ASASSN/ASASSN14ae OSU_ASASSN/ASASSN14li OSU_ASASSN/ASASSIN18jz Calibrations: MODS1 & 2 Slitless pixel flats MODS1 & 1 Mask cals for UM_N2403 Standard Stars: GD 71 G191-b2b HZ44 Details (All times UT): ------------------------------------------------------------- 00:30 - Handover. Thin cirrus overhead. - Starting the night with MODS. 00:45 - Running MODS2 calibrations - pixel flats 01:15 - Opening dome. 01:30 - Still pretty bright, but moving to first standard star: gd71. - Delay due to defunct ds9 windows. - Switching from obs2 login to obs4 login 02:02 - Exposing on gd71 02:34 - Observing standard star g191b2b 02:50 - Moving to first target: ND_paloma_pa80 03:08 - Beginning science on ND_paloma - Seeing ~0.9 - MODS1R is reading out very slowly. Sometimes. ~25% - Clear and stable. Moderate wind. 03:50 - Variable seeing between 1.00 and 2.00 - Strange. Sky looks clear. Wind and temps are stable. 04:00 - Seeing seems stable around 1.4 04:20 - Seeing ~1.20 04:45 - Seeing ~1.00 04:55 - Seeing ~0.85 05:23 - MODS1 Red detector behind 3 exposures. - Seeing ~1.00 05:55 - MODS2 Blue stopped on last exposure. Taking one additonal exposure to make up for it. 06:07 - Moving to ASSASN14ae. 06:05 - Paused to Unwrap rotator. - IMCS got confused, so had to rerun acquisition. 06:30 - Executing science ob. Clear skies. Seeing ~1.00. 07:15 - Seeing ~1.00. 07:45 - Seeing ~1.20. 08:05 - Thin cirrus overhead. Seeing ~0.9. 08:10 - Some clouds rolling in. 1 mag of extinction. Looks like weather will be variable from here on out. Will continue with ASASSN programs since they don't require clear skies. 08:20 - Moved to ASASSN14li 08:25 - Guide star aquisition failed. Selected a new, slightly brighter GS. 08:35 - Unwrapping rotator. 08:38 - Re-acquiring ASASSN14li 08:52 - Executing science ob. Some clouds. Seeing ~1.10. 09:07 - Seeing jumped to ~2.00. Oof. 09:13 - Seeing ~1.40. 09:32 - Seeing ~1.80. 09:55 - Seeing ~1.10. 10:15 - Seeing ~0.70. Light cirrus overhead. 10:45 - Moving to ASASSIN18jz 10:48 - Need to redo telescope pointing. 11:10 - Executing science ob. Intermitten clouds. Seeing ~1.4 11:20 - Seeing ~1.3 11:30 - Seeing ~1.1 11:50 - Intermitten clouds. ~1.5 mag of extinction. - Seeing ~1.0 12:15 - Seeing ~1.3. Conditions improving. ~0.5 mag of extinction. 12:30 - Seeing ~0.8 13:07 - Moving to final standard star o the night: HZ44 13:30 - Seeing ~0.9 13:45 - Finishing up with UM_N2403 cals