Observers: P. Martini (OSU), G. Simonian (OSU), M. Rutkowski (UMN) Support Astronomer: Dave T. Telescope Operator: David Gonzalez SUMMARY: Weather at opening is very good. No clouds with a light haze on the horizon as in previous days, humidity at dome opening considerably higher (~30%) than in previous evenings of run. Initial seeing was fair at ~1.0. Seeing increased over the course of the evening, sometimes increasing at its worst to >2.0 in short intervals during exposures. Generally, seeing averaged around ~1.3-1.5. Telescope configured for MODS1 Details: All times are UTC unless otherwise indicated Succesful programs observed were as follows: MODS:OSU_ASASSN (14bu, 14ca, 14az); OSU_LQ (160-159, 144-143, 176-175, 202-201); OSU_ETG UGC09519 TIMELINE 03:09 Acquired on GD153 in bright (mu=16 mag) sky, will hold until sky brightness plateaus to begin science exposures on Spectro-photometric standard 03:30 Beginning dual-grating and dual-prism science exposures on GD153. Seeing is at ~1.2" 03:52 Acquiring on first science field OSU_ASSASN (SN14bu). Seeing is constant at ~1.2 at time of acquisition. 04:07 Observing OSU_ASASSN Target 14bu. Seeing has improved from acquisition to ~1.0", not surprisingly humidity has dropped significantly to 20% over ~30 minutes. 04:45 Acquiring on science field OSU_LQ Target ID160-159. 05:08 Observing OSU_LQ ID160-159. Seeing at 1.3". SLight offset in PA necessary to acquire both candidates in slit 05:33 Acquiring on science field OSU_LQ Target ID144-143. Slight xy offset necessary to align candidates. 05:53 Observing OSU_LQ ID144-143. Seeing at 1.2". IMCS took a moment to lock on in red. Seeing diminished substantially over the course of this observation, increasing to ~1.8" (low elevation/high airmass) 06:21 Acquiring on science field OSU_LQ Target ID176-175. Seeing has improved at this field ~1.5. To center slit on objects it seems necessary to again apply -0.3" offset in X. 06:36 Observing OSU_LQ ID176-175.obs. Seeing at 1.25". 07:04 Acquiring on science field OSU_LQ 202-201, humidity has leveled off at ~30% over the past hour. Oddly enough, again we needed a -0.3" offset in X to center the objects on the slit. 07:18 Observing OSU_LQ ID202-201.obs. Seeing at 1.3" 07:47 Acquiring on science field OSU_ETG UGC09519. Seeing at 1.0". Humidity remains steady at ~30% 07:59 Observing OSU_ETG UGC09519. During 1 hour exposure, seeing was quite variable. Peaking periodically at >2.0" for ~3-5 minutes at a time. Typical seeing was ~1.3" on average. 09:06 Acquiring on science field OSU_ASASSN13co 09:20 Acquired on field, but could not reliably identify target SN in field of view. Unsure if SN candidate or just SF knot along broad spiral arm, due in part to a combination of seeing (~1.3") effects and the relative faintness of the target. Declined observations in lieu of brighter additional targets also submitted as part of OSU_ASASSN program. For reference, acquisition expsoure was mods1r.20140609.0052.fits. 09:28 Acquiring on science field OSU_ASASSN14ca 09:35 Observing ASASSN14ca, seeing at 1.4 at start of observation, but rising target so hope to improve over duration. At conclusion of observations, seeing was only moderately better at ~1.3" 10:09 To allow for final target for the evening to rise above elevation limit, we will switch to a standard star and return after completing those exposures 10:10 Acquiring Spectro-photometric standard BD284211. Using the new modsAlign_v15 here did not seem to correct the biases on each of the chips in direct image through the slit for acquisition. 10:18 Observing Spectro-photometric standard BD284211, seeing has improved to ~1.0". 10:29 Returning to science field OSU_ASASSN14az. 10:46 Observing OSU_ASASSN14az. Bright source hard to place directly in the slit, but small offset applied is sufficient and first look showed strong detections. Seeing at 1.7" 11:27 Calibrations bias3k, imflats_r begun.