08/30/2020 Civil Brotherton @ WIRO Longslit (remote) Outside Temp(F) --58 (evening) Outside Humidity(%RH) -- 28 (evening) Wind Speed(MPH) -- 10 mph (evening) Wind Direction --290 (evening) Slit width 5 arcsec, set on September 7 empirically (41 ticks tonight) 900l/mm grating, sub-array center column 1050, width 360 Longslit focus set to 310 on instrument. Seeing very terrible start of night after a cold front moved through. Around midnight: Seeing= 9.7 pix (0.38 arcsec per pixel) or 3.7 arcsec focus (temp= 37F) Centered for field, collimation numbers at Dec 39 HA 00:20 0:01:49.3 -1:02:45 Fill N2 #2 (20:30) Flat at fixed -6.25 48, dome 15 Index Object EXP secz UT T-Out Notes ------------------------------------------------------------------------------ a001-10 Flat 3 03:05 58 a011-20 CuAr (Zenith) 2 03:11 58 a021-30 Bias 0 03:14 58 Waiting for clouds... a031-34 Mrk 817 400 1.75 04:55 38 SNR=20 Seeing is terrible...cold front came through. a035-43 PG1534+580 300 1.8 05:30 35 SNR=12 a044-47 BD28d4211 60 1.02 06:35 37 Moon, bad seeing, then fog came up...close dome and mirror covers. Reopen 4am with humidity down and fog gone. a048-51 G191B2B 60 1.23 10:06 44 seeing 2.3arcsec a052-54 NGC985 300 1.58 10:16 44 SNR=25+ a055-57 Mrk 6 500 1.42 10:38 46 SNR=20 a058-60 1ES0206+52 300 1.02 11:08 46 SNR=25 Seeing better, now below 2 arcsec.