Telescope: Clay Instrument: MIKE Observer(s): Aarnio, Irwin Assistant: Sergio File Object UT start Exp.[s] Airmass Slit Binning Comments 148 ThAr 19:59 15 0".35 1x1 Fast readout mode (86s) 149-158 Quartz 20:06 120/30 " " 159 ThAr 20:42 15 160-169 Milky Quartz 20:46 120/96 Diffuser in 170-179 Bias 21:22 0 Diffuser out 180-189 Bias 21:37 0 1" 2x2 slow readout; begin Irwin calibrators 190 ThAr 22:32 5 191-200 Quartz 22:33 6/3 201 ThAr 22:44 5 202-211 Milky Quartz 22:46 20/16 Diffuser in 212 ThAr 23:03 5 213 ThAr 23:29 5 214-223 Twilight trace 23:31 10 1" 2x2 224 ThAr 23:43 5 225-234 1331852 23:59 5/14 V=2.2, rapid rotator. BAD!! Diffuser was in part-way!!! 235 ThAr 00:11 5 Diffuser out 236 ThAr 00:13 15 0".35 1x1 237-246 1331852 00:16 67/36 1.146 Diffuser in. BAD!!! Diffuser stuck partway!! 247 ThAr 00:45 15 BAD!!! Diffuser still stuck partway!! 248 AB Aur 00:47 280/160 BAD!! Diffuser partway in [we discovered problem on this object] 249 AB Aur 00:56 5 testing whether issue is resolved, no it's not 250 AB Aur 01:00 5 testing again whether issue is resolved- yes it is 251 AB Aur 01:03 280/160 2.082 252 AB Aur 320/200 253 AB Aur 350/200 254-255 ThAr 01:24 15 256 T Tau 01:28 550/250 1.801 Seeing ~0".7, humidity 63% 257 T Tau 01:40 1000/700 1.878 Setting fast, low cts even at 1000/700s [we already have MIKE data for this star...] 258-259 Th Ar 02:08 15 260-262 HR 1544 02:28 30/25 1.57 A1 IV flux calibrator 263-264 ThAr 02:34 15 265 VY Mon 02:38 840/404 1.347 abysmally low counts on blue side 266 VY Mon 03:06 2000/1500 1.399 Even 33 minutes didn't help the blue side. Not going to spend any more time on this object 267-268 ThAr 03:42 15 269-271 HD 50138 03:47 250/155 1.200 272-273 ThAr 04:04 15 274-276 HD 60753 04:09 200/150 1.131 277 ThAr 04:27 15 278-280 MWC 166 04:29 250/160 1.252 B3 IV flux calibrator 281-282 ThAr 04:46 15 283-285 HD 58647 04:50 220/150 1.214 286-287 ThAr 05:07 15 288-290 HR 3454 05:20 15/20 1.261 291-292 ThAr 05:26 15 293 TW Hya 05:32 550/315 1.016 294-295 TW Hya 05:44 650/400 1.009 Whopping emission lines on red side! 296-297 ThAr 06:09 15 298 Procyon 06:14 2/9 2.054 Defocused at 100, elevation=30 deg. Both sides saturated 299 Procyon 06:17 4/4 red side still saturated 300 Procyon 06:19 4/2 2.080 red side still saturated 301-303 Procyon 06:21 4/1 2.104 304-305 ThAr 06:26 15 Begin 2.5 hours for Irwin End of night calibrations (rapid rotator again) 332 ThAr 09:32 15 333-342 1895685 09:34 94/52 1.083 V=2.6 rapid rotator. Diffuser in 343 ThAr 10:06 15 Diffuser out END OF NIGHT