Observing Log – 26 December, 2011  MODS spectroscopy

Observers:  Fuyan Bian, Weihao Bian, Richard Green for OSU/RC/LBTO queue

Night Summary:  Photometric night with seeing ~1.5”, finally settling to 1.0” at 3 AM.  Routine 
observation essentially all night long, although faint objects not worthwhile until the middle of the night.

Initial conditions:  Photometric, winds at 15 m/s from NE, T=-7 C.  Mirror about 1 deg warmer than ambient.  
Right shutter door will not open, and will not re-latch.  We can live with that because the plan for the 
night is to use MODS.  We will possibly open vent doors if the wind dies down.

18:55  Collimation finally converged on pointing star; slewing to BD+28 4211.  Seeing ~1.7”.  
Collimation quite good at <200 nm.

19:12  Slewing to Xiaohui target 2310+18.  Seeing is ~1.3” at the beginning of the one-hour exposure sequence.  
Seeing deteriorating to 1.5+ by the end.

20:33  Slewing to FeII   J0146+13.  

21:00 Slewing to SN 2000ei; took some time to identify from finding chart.  Seeing ~1.2 – 1.3” at start.  
Got better, then worse, to 1.5” at the end of the 2 hours.

23:30  Slew to G191-B2B

23:49  Slew to Fe II  J0746+44  Seeing ~1.3”, looking into wind, so some telescope bounce.

00:13  Slew to J0746+43  Seeing now 1.1”

00:48  Slew to J0949+63  Very faint guide star, unable to collimate.

01:09  Slew to Humphries SN 2011ht

01:40  Slew to J0947+53

02:00 (approx) Slew to SN 2011b, seeing ~1.3” due North and low.

03:00  Slew to J1100+60  Seeing ~1.0”.

03:18  Slew to J1210+54  Seeing ~1.0”

03:42  Slew to J1153_32  Seeing ~1.0”

03:58  Slew to SN 2006tf – azimuth unwrap for the enclosure.  Seeing ~1.1” at beginning of the one-hour sequence at 04:14.

05:20  Slew to Bootes 1 (mask);  seeing variable 1.1 – 1.5”.
06:18  Feige 34