Date: 2019 Dec 20 UTC Observers: Phillips, Vallely, Wood TO: Steve Allanson SA: D. Thompson Moon phase: Last Quarter Summary: Good night of LBC observations with a break in the second half for a PEPSI target. Seeing was excellent for the start, but degraded a bit in the second half. Calibrations: Uspec, F972N20, B, R, & V LBC flats Completed Programs: OSU_monitor/N628 OSU_LBCSBF/UGC68 OSU_dwarfsimg/NGC628twins OSU_dwarfsimg/NGC628KDG10 OSU_LBCSBF/DDO043 OSU_LBCSBF/M31blob UM_COSMOS/cosmos_01 UM_COSMOS/cosmos_02 Details (All times UT): ---------------------------------- 00:30 - Going to get twilight flats for LBC in the filters for this run's programs. 01:30 - Now beginning science observations for OSU_monitor/N628. Had to stop to refocus after 3 exposures. Seeing is around 1". 02:30 - Moving on to OSU_LBCSBF/UGC685. Seeing looks good (< 1"). 03:40 - Now working on OSU_dwarfsimg/NGC628twins. Still < 1" seeing. Some light cirrus is faintly visible on the all-sky camera. 04:45 - Now moving to OSU_dwarfsimg/NGC628KDG10. Still < 1" seeing. Looks close to 0.8". 05:55 - Moving to OSU_LBCSBF/DDO043. Still getting great seeing. Looks to be around 0.9" in blue and 0.7" in red. 07:15 - Starting observation of OSU_LBCSBF/M31blob. Tried refocusing after the first observation because seeing was around 1.4". Doesn't seem to have been a focus issue, though. Seeing is still around 1.5". Will run the observation anyway and hope the sky improves. 08:15 - We note that there has been noticeably more noise in chip 2 of the blue side during the 30s exposures than the other chips. (true for the whole night, not just this target). 08:40 - Going to get one of the UM_COSMOS fields before switching to PEPSI for the high-priority OSU target. Observing cosmos_01, seeing is currently a bit below 1.4". Ended with seeing around 1.6". 09:35 - Handing over to PEPSI for the target. There were some fairly significant issues with the telescope at the start of the transition, but things eventually settled in. 11:30 - Took back control from PEPSI. Hoping to get another UM_COSMOS target in before twilight. 12:05 - Now starting cosmos_02 observation. Seeing is about 1.6" per the DIMM, although it seems a bit worse in the images. 13:00 - Getting some more twilight flats. 13:50 - Going to do biases after we close.