LBT OSU/RC Observing Notes
Date: 2015 May 20
Observers-- Fausnaugh, Garnavich, Villanueva
SA-- Olga Kuhn (on-call)
TO-- Geno B.

Summary: Clear skies with high, light cirrus all night.  Seeing was
~1.0 arcseconds.  Observed 3 MODS targets and 3 standard stars.  Two
technical issues---MOS error on LUCI, causing us to switch to MODS,
and a bad guide star (actually a galaxy), causing us to over-estimate
the seeing and abandon the field.

Completed Programs: UM_Impostor ( and 7/8 exposures OSU_USS_1558)

Observed Targets: as above, + ND_LLSgal_1302b

Details (All times in UT.  Seeing is estimated from GCS.)
---------------------------------------------------------
1:20--  Started up LUCI to run calibrations.
	Ran the provided dark script (OSU_SDSSRM), which moved the double
	blind mask, but this resulted in the MOS error.  We've notified 
	Dave Thompson.

1:30-- Woke up MODS just in case.  Getting ready to open.

1:54-- Dome is open, but there is an issue with TCS.  TO and night crew are 
       investigating.
2:17-- Issue is resolved.
2:19-- Sunset.  Committing to MODS.

3:04-- Feige66 acquisition
3:08-- Feige66 observation (including prisms)
       seeing:  0.80
       skies mostly clear, slight haze and cirrus on the horizon.
3:15-- 12 degree twilight

3:31-- UM_Impostor acquisition preset has been sent, redoing pointing
3:33-- UM_Impostor acquisition
3:44-- UM_Impostor observation (exposure started at 3:47)
       seeing: ~1.20
       sky is clear, some cirrus on horizon.
3:50-- 18 degree twilight

4:53-- ND_LLSgal_1302a acquisition
       layer of cirrus clouds
       guide star looks much fainter than the nominal 12 mag in finder, 
       checking pointing.
       seeing is >1.5, moving to a standard  (retroactively discovered that
       this guide star is a galaxy)

5:08-- hz44 acquisition
5:11-- took field image while slewing...resending preset
5:18-- hz44 observation (including prisms)
       seeing: ~0.80 arcseconds
       clear sky, light layer of cirrus
       When configuring for prisms, terminal printed a disconcerting 
       message: 'Done Instconfig completed with 1 fault'
       On the MODS dashboard, dichroic is highlighted yellow.  However,
       prism spectra look fine.

5:35-- ND_LLSgal_1302b acquisition (switched to 1302b because guide star 
       looks better).
5:51-- sent blind offset
5:52-- ND_LLSgal_1302b observation
       seeing: ~1.2
       skies are clear, light layer of cirrus

6:48-- OSU_USS1558 acquisition
6:59-- OSU_USS1558 observation
       seeing:  ~1.05
       sky is clear, light layer of cirrus
8:29-- seeing has been variable, hitting a max of ~ 1.3-1.4, but currently
       has leveled off at ~0.80
9:05-- 4 exposures completed.  Taking thru image to check alignment
       seeing: ~1.10
       skies clear, light layer of cirrus.
9:12-- Alignment is good.  Rerunning observation.
10:42-- 18 degree twilight.  3rd exposure finished.  Cancelling remainder.
	seeing:  ~1.1

10:48-- bd28 acquisition (unwrapping)
10:59-- bd28 observation (prism included)
	seeing: ~0.75

11:15-- Closing dome, running OSU_USS1558 cals.