MDM Trouble Report for 2005 Dec 28

Telescope: 2.4m
Observer(s): Halpern, Tyagi, Zimmerman (Columbia)
Instrument: RETROCAM

Problem(s) Encountered:
Reducing some data, it is evident that there are
internal refections in RETROCAM, which might limit
the detection of faint stars near medium-bright
stars.  It seems to be worse in the g filter than
in the r filter. (We haven't examined the other
filters carefully).  Please look here:

http://www.astro.columbia.edu/~jules/retrocam/

Is this a known problem?

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Submitted on 2005 Dec 29 [5:51:00]