MDM Observatory 2.4m Telescope Observer's Report for 2003 Sep 25

Observer(s): Crotts
Institution(s): Columbia

Instrument: Mark III

Worked for 5 hours (last half of the night)
Conditions were Photometric most of the night.
Problems were encountered, see the separate trouble report for details.

Seeing and Weather:
   High Humidity from sunse until midni.
   Beg: Fog/Low Clouds, Winds Light & Variable, high humidity
   Mid: Seeing 2 arcsec, Clear, Winds Light & Variable
   End: Seeing 1 arcsec, Clear, Winds Light & Variable

Observing Summary:

1) The response versus wavelength for the spectra look strange,
with a big dip between about 5000 and 6000A.  (Is there a filter
in the lightpath?)  See the plot of the standard star exposure
(ccd.065) on chichon.

2) Is there a lightleak, or is the quartz lamp not turning all
of the way off?  See Neon lamp exposure ccd.068 displayed on
chichon.

3) The z key on the chichon keyboard doesn't work.  (I can write
a  z  only using a cut-and-paste.  I can't do a control-z at 
all.

------------------------------

Submitted on 2003 Sep 26 [6:23:34]