MDM Trouble Report for 2003 Sep 25

Telescope: 2.4m
Observer(s): Crotts (Columbia)
Instrument: Mark III

Problem(s) Encountered:
I think the nitrogen purge didn't succeed in clearing the
CCD window, which explains problems #1 and #2.

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.


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Submitted on 2003 Sep 26 [6:33:44]
NOTE: This trouble report replaces the previous report for 2003 Sep 25