Observers: Gerke, Shappee, Fausnaugh Telescope Operator: David Gonzalez-Huerta Support Astronomer: Michelle Edwards Instrument: MODS Observing Log for 2013 June 6/7 Summary: Observed standard Feige66 at sunset, OSU_CHAOS-NGC5055_f2 and UVa_BCD-J1442Lc. Observed 2 full exposures and 20min of last 30min exposure for OSU_EAGES-365043 due to clouds (checked as done but we are checking with PI). Observed 2 of 4 exposures from UVa_HS1851 before lost guide star due to increasing clouds. Observed standard BD284211 then closed. Details: calibrations: bias8k, bias3k, grflats Interrupted for telescope team to test a collimating patch. Looks ok, so we will use it tonight. calibrations: grlamps Ventilation dome needs to be opened for temperature regulation. Also, we have so many masks that need calibration and the rest of the run looks clear so we will be open. Thus we will try to take mask lamps even though the ventilation doors are open under the assumption that scattered light will not hamper calibrating using the lamps. calibrations: execMODS -b Comps NGC5055_f2.cal This first was a mistake because it did not first run the Archive and Instrument blocks. execMODS -b Archive NGC5055_f2.cal execMODS -b Instrument NGC5055_f2.cal execMODS -b Comps NGC5055_f2.cal We decided that using blocks was a pain so we are making separate lamp and flat scripts. execMODS EAGES_365043.lamps.cal execMODS EAGES_603760.lamps.cal execMODS EAGES_J1425.lamps.cal There is some scattered light on the blue side (which is exactly why we are only doing lamps). We called Kevin Croxall who thinks the scattered light might be ok. We sent him an image to verify. If they will not be acceptable we will have to retake the lamps with the dome dark. Conditions at sunset: clear overhead, some clouds to North. little to no wind, temperature stable. 03:50 acqMODS Feige66 03:53 execMODS 04:05 acqMODS OSU_CHAOS-NGC5055_f2 04:17 taking acquisition image, looks good 04:20 execMODS, seeing ~0.7 and stable 06:32 acqMODS UVa_BCD-J1442Lc 06:47 execMODS, seeing ~0.8 07:33 acqMODS OSU_EAGES-365043 07:46 execMODS, seeing ~0.8 08:00 audible alarm in control room...no interruption or interference w/ data, seems ok. 09:12 clouds-lost guide star. Paused for two minutes to see if it came back. No luck; 10 minutes left on last exposure read out chip and moved to next target. 09:19 acqMODS UVa_BCD-J1509Lc, still cloudy, lost guide star again 09:24 trying different part of sky with UVa_HS1851 09:36 execMODS, guide star looks good, still some light clouds overhead, seeing ~0.9 10:01 increasing clouds, lost guide star again. got 2 of 4 exposures. 10:04 Moving to standard star 10:14 execMODS BD284211, seeing ~1.1 10:20 clouds increasing 10:24 trying acqMODS UVa_BCD-W1702 10:30 no guide star, now moderate cirrus over whole sky. Closing dome. Morning Calibrations: execMODS -u OSU_CHAOS/NGC5055_f2.flats.cal execMODS -u OSU_EAGES/EAGES_365043.flats.cal execMODS -u OSU_EAGES/EAGES_603760.flats.cal execMODS -u OSU_EAGES/EAGES_J1425.flats.cal execMODS -u UM_M101stars/M101F3.cal execMODS -u MODSCalib/grpixflats.cal execMODS -u MODSCalib/prbias.cal execMODS -u MODSCalib/slitflats_June13.cal