Date: 2020 Feb 28 UTC Observers: Duck, Vallely TO: Josh Williams SA: Olga Kuhn Moon phase: Waxing crescent (illumination 13%) Summary: Decent night of MODS & LBC. Calibrations: MODS standard GD 71 LBC twilight flats for U, V, B, and R LBC biases Completed Programs: UVa_FR_AGN/J0742+27 UVa_BCD_MODS/J0837 OSU_ASASSN/ASASSN14ae OSU_monitor/M82 OSU_monitor/N4605 OSU_monitor/N4826 OSU_monitor/N4258* OSU_monitor/N4236* *heavy (by LBC standards) clouds Details (All times UT): ---------------------------------- 01:00 - Was hoping to get some twilight flats done, but clouds are preventing that. 02:00 - Starting with standard GD 71. Shooting through some cirrus. Had a minor file naming issue since a handful of images had been taken earlier. 02:30 - Going for J0742+27. Had a MODS1R image readout issue (image 0008) during acquisition. Seeing is great at around .7", but we've still got cirrus overhead. Added an extra exposure in MODS1B, MODS1R, and MODS2B because we had a hang in MODS2R and didn't want the other three sitting idle while MODS2R took its last image. 03:10 - Moving on to J0837. Had to do a longer exposure for the acquisition because the initial setting didn't make the target visible in MODS1. 03:30 - Had to update the script so that it would take the requested 4x900s exposures. Now starting science exposures. Seeing is about 1.2", and there are still light clouds overhead. Had another weird copy issue when we had to run red expdone after MODS2R hung. This produced a copy of mods2r.20200228.0019 with the name 191203M8.1j4 04:40 - Moving on to ASASSN14ae. No issues with target acquisition, began science exposures at 5:00. 06:30 - Seeing has been a bit worse for this target, a little worse than 1.5". 07:15 - Clouds have mostly gone away, so we're going to swith to LBC. 07:35 - LBC now good to go. Had a minor software issue with copointing for the first target, but quickly was able to start focus/collimating. 08:00 - Starting NGC4826 science exposures. 08:15 - First red exposure was very badly out of focus, so we stopped to try dofpia. 09:10 - Took several iterations of dohybrid/dofpia and searching for focus fields with more stars before we could succesfully remove a huge coma issue with the focus. Eventually were able to focus on the M82 focus field, so we're going to do the science exposures for M82 while we're there. 09:15 - Images look decent, with <1" seeing measured in the image PSFs. 09:25 - Now moving to NGC4605, hoping to avoid focus issues. Things seemed to go well, started science at 09:35. Seeing is about 0.8". A little cirrus has moved in. 09:50 - Headed back to face our focusing demons at NGC4826. Getting about 1" seeing in the images after a succesful round of dofpia. 10:40 - Now going to NGC5194. 11:05 - Lost right side, so had to stop science. 11:15 - Going back to reacquire N5194 and focus/collimate. Getting a good bit of clouds now, making target acquisition difficult. 11:25 - Gave up on N5194 and went to try N4258. Running exposures scaled up by 1.5x to try to compensate for the clouds. Seeing is a bit above 1.5". 12:35 - Going to try N4236 before the sky gets too bright. 12:55 - Done with science, going to get some flats in a bit. 13:40 - Done with flats, now taking biases.