Observers:  Shappee, Terndrup, Humphreys, Davidson
Telescope Operator: Steve Allanson
Support Astronomer: Dave Thompson
Instrument: MODS

Observation log for 04-05 January 2013

Clear.  In the evening the inversion layer appears to be ~1000 feet below telescope.  Humidity ~10%-30% throughout the night.  

Projects Completed:
UM_RMHstars
OSU_RMAGN
OSU_SN2011fe

Projects Not Completed:
OSU_CLASH  (2 plates)


Play by play:
01:25
execMODS g191b2b.obs
seeing ~ 1”

01:38:
acqMODS M31-004229.87.acq
seeing ~0.8”

01:50:
exMODS M31-004229.87.obs
seeing ~0.75-0.8”

02:21:
acqMODS macs0647.acq

~02:37:
execMODS macs0647.obs
seeing at the field ~0.8

05:14:
acqMODS macs0717.acq
needed to unwrap, so unwrapping....

05:19:
acqMODS macs0717.acq

05:33:
execMODS macs0717.obs
seeing ~0.9

06:43:
Shell rip, exposures were paused....
Read out because there may have been bad collimation...

06:57:
Restarted the 3rd exposure (doing 3 more...)
seeing ~0.7

08:31:
acqMODS PG0804_HA_0_2.acq

08:39:
execMODS PG0804.obs
seeing ~0.8-0.9”

09:17:
acqMODS OSU_SN2011fe_UT10.acq
seeing ~1.2

~09:28:
execMODS OSU_SN2011fe.obs
seeing ~1.2


had to stop to clear the secondary,
reading out the first ~ 5 min while telescope recollimates

The recollimations does not seem to be working.  Steve and Dave suggested changing guide star while telescope tries to recollimate.

Quickly changed guide stars. The original guide star was well inside the “blue box,” but perhaps it was too close to the edge.

09:49:
acqMODS OSU_SN2011fe_UT10C.acq

Already looks much better!

10:01
execMODS OSU_SN2011fe.obs
seeing ~0.9-1.0

Note:  It appears that the blue box when selecting guide stars may be too big in at least some cases. The telescope was at a high airmass

11:16:
seeing growing to 1.1

11:43
seeing all over the place
1.2-2.0

12:34:
seeing 1.0

12:58:
Cut the last exposure off of the SN2011fe project because we are hitting ast twilight and we still need a std.  

acqMODS hz44.acq

13:06:
execMODS -b DualGrating hz44.obs

DONE!