MDM Trouble Report for 2008 Apr 11

Telescope: 2.4m
Observer(s): McGreer (Columbia)
Instrument: TIFKAM

Problem(s) Encountered:

There are wave patterns along the vertical axis of the images,
similar to the noise I've seen on the 8K before (but not TIFKAM).
I noticed this in the biases but thought the levels (~2.4ADU)
were low enough to not be a problem.  However, the pattern clearly
shows up in sky-subtracted J band images, contributing a
significant fraction of the residual noise.  It is less of a
problem in the K band due to the higher sky noise, so for now I
will use the K band.

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Submitted on 2008 Apr 12 [6:12:19]