Observers: Scott Adams, Paul Martini, Roberta Humphreys
Telescope Operator: Geno Bechetti
Support Astronomer: Michelle Edwards
Instrument: MODS1

Summary:
Scattered cirrus at sunset -- not photometric.  0.7-1.0" seeing.  Observed a spectrophotometric standard during evening twilight.  Observed OSU_PC/qso1145m[1-3].  Observed NGC5055_f1, but it started to get cloudy towards the end of the observations.  Tried an EAGES mask, but ended up losing the last 2.5 hours of the night to clouds.


Details:

UT 0025
starting evening clibrations:
execMODS bias8K.cal
execMODS bias3K.cal
execMODS macs1149.cal
	IMCSLOCK command timed out
	ran modsWake, then re-ran macs1149.cal

UT 0120
venting dome

UT 0246
seeing 0.7"
starting dual grating & prism observations of spectrophotometric standard
acqMODS feige34.acq

UT 0252
execMODS feige34_dualgratprism.obs 

UT 0313
seeing 0.9"
acqMODS qso1145m2.acq

UT 0350
# some alignment trouble, as at least one box center did not appear to be 
# calculated correctly. 
execMODS qso1145m2.obs

UT 0433
seeing 0.7"
acqMODS qso1145m3.acq

UT 0449
seeing 0.8"
execMODS qso1145m3.obs

UT 0531
seeing 0.7"
acqMODS qso1145m1.acq 

Ran into a funny issue with modsAlign, that was apparently caused by a 
'phantom' xpa access point. 

We had used display in IRAF to look at some data from the previous mask. 
When we then ran modsAlign, the modsAlign fits file displayed in the ds9 
window linked with IRAF. We quit modsAlign with 'q', closed the IRAF-linked 
ds9 window, and ran modsAlign. This gave us the following message: 

osurc@obs2% modsAlign qso1145m1.mms mods1r.20130504.0036.fits mods1r.20130504.0037.fits
yes
Killing IRAF task `display'
Traceback (most recent call last):
  File "/home/modseng/bin/modsAlign", line 1160, in <module>
    boxxc, boxyc, boxid, boxfluxc = getBoxCoords(pixelScale, maskImage)
  File "/home/modseng/bin/modsAlign", line 452, in getBoxCoords
    iraf.display(maskImage,1)
  File "/lbt/mods_runtime/python-mods/lib/python2.6/site-packages/pyraf/iraftask.py", line 751, in __call__
    return apply(self.run,args,kw)
  File "/lbt/mods_runtime/python-mods/lib/python2.6/site-packages/pyraf/iraftask.py", line 352, in run
    self._run(redirKW, specialKW)
  File "/lbt/mods_runtime/python-mods/lib/python2.6/site-packages/pyraf/iraftask.py", line 796, in _run
    "\n" + str(value))
stsci.tools.irafglobals.IrafError: Error running IRAF task display
IRAF task terminated abnormally
ERROR (742, "Cannot open device (node!imtool,,4096,4096)")

It turned out the xpa access point was still open (see the 'yes' above), and 
so modsAlign thought a ds9 window was open, even though one was not. 
This was confirmed with:

osurc@obs2% xpaaccess -c modsAlign
yes

We closed the phantom modsAlign access point with:

osurc@obs2% xpaset -p modsAlign exit

modsAlign then functioned normally again. 

(We know we're not supposed to use other ds9 instances, particularly with 
IRAF, on the same machine that runs modsAlign.) 

UT 0559
seeing 0.7"
execMODS qso1145m1.obs

UT 0634
acqMODS NGC5055_f1.acq

UT 0649
seeing 0.7"
execMODS NGC5055_f1.obs 

UT 0740
guide star fading in and out - clouds

UT 0900
acqMODS EAGES_365043.acq
looking through some clouds...
seeing 1.0"

UT 0915
execMODS EAGES_365043.obs
UT 0920
guide star lost
aborting image... too cloudy

UT 0945
Started some calibrations while waiting to see if the clouds will clear up
execMODS prbias.cal

UT 1035
tried to observe a spectrophotometric standard acqMODS bd332642.acq but it is too cloudy... closing the dome

UT 1045
starting morning calibrations:
execMODS qso1145m2.cal (noticed that mods1r images are missing from the qso1145m2.cal and qso1145m3.cal that we ran yesterday morning)
execMODS qso1145m3.cal
execMODS prlamps.cal
execMODS prflats.cal
execMODS grpixflats.cal
execMODS slitflats_May13.cal