01/11/2021 Civil Zastrocky & Brotherton @ longslit (remote) Outside Temp(F) -- 19 (Start) Outside Humidity(%RH) -- 47 (Start) Wind Speed(MPH) -- 24 mph (Start) Wind Direction -- 250 (Start) Slit width 5 arcsec, set on September 17, 2020 empirically 900l/mm grating, sub-array center column 1050, width 360 Longslit focus set to 310 on instrument. Seeing= 10.5 pix (0.38 arcsec per pixel) or 3.9 arcsec focus (temp 19F) Centered for field, collimation numbers at Dec 46:01 HA 00:40 0:00:30.9 -1:04:13.0 Fill LN2 #2 (17:05) Flat at fixed -6.25 48, dome 15 Index Object EXP secz UT T-Out Notes ------------------------------------------------------------------------------ a001-10 CuAr 2 01:04 19 @-95C a011-20 Bias 0 01:07 19 @-119C a021-30 Flat 3 01:11 19 Lamp @95% flat looks strange. No ice appeared to be on mirror. Maybe instrument? Parking at flat field position with all lights on. a031 Flat 3 02:23 19 Lamp @95% Ice seems to be melting. Not gone yet a032 Flat 3 03:25 17 Lamp @95% melting but still not gone a033 Flat 3 04:27 18 Lamp @95% melting but still there >turning on heater a034-43 Flat 3 05:28 18 Lamp @95% Looks good! Opening ~22:30 local a044-46 G191B2B 60 1.04 06:03 18 Std a047-49 Mrk 6 500 1.20 06:11 19 SNR=25 a050-52 Mrk 79 300 1.03 06:40 20 SNR=30 a053-55 Mrk 704 400 1.29 06:35 19 SNR=24 ice check >> all clear a056-59 NGC2617 600 1.49 07:03 20 SNR=20+ a060-62 IRAS05589+2828 400 1.15 07:50 19 snr=20 a063-65 PG0923+129 400 1.16 8:15 18 snr=30+ a066-68 Feige34 60 1.05 8:42 19 std Focus. Seeing is now 3.3" a069-71 NGC3227 300 1.11 8:49 18 snr=50+ a072-75 Mrk141 600 1.09 9:10 19 snr=22 a076-78 NGC3516 300 1.14 9:56 18 snr=60+ a079-81 PG1100+772 600 1.23 10:14 18 snr=30 a082-85 Mrk279 300 1.25 10:46 18 snr=20-25 a086-89 Mrk817 300 1.23 11:10 19 snr=50 Seeing deteriorated looks like... a090-93 PG1534+580 250 1.27 11:35 19 snr=22 a094-96 HZ44 60 1.04 11:56 18 std seeing is now. 5.3" a097-99 NGC4151 100 1.01 12:06 19 snr=50 CCD is warming up. Now -112C a100-103 PG1302 400 1.59 12:14 19 snr=15-20 CCD is now -100C, should still be ok a104-106 Mrk841 300 1.23 12:47 19 snr=22-25 CCD is now -90C, should still be ok for last target of night a107-109PG1426+015 300 1.35 13:06 18 snr= Last object in twilight, end T about -80C Try PG1310-108 another night Mirror check...mirror looks fine. Got 17 objects.