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Subject: OT: U.S.P. Collodion
From: Gary Paterson
Reply To: mapug@shore.net
Date: Wed Apr 17 01:51:28 1996

I was reading exerpts from a recent journal of the amateur telescope
society which contained an article outlining a professional method for
cleaning optics. The chap used U.S.P. Collodium (cellulose nitrate in
ether-methanol solution) and states that this method leaves far less
residue on optical surfaces than methanol/propanol/water type mixtures
that many people have already talked about. I believe it is marginally
easier to work with this substance on mirrors than lenses, but I was
wondering if anybody has any experience using this stuff to clean
corrector plates/eyepieces and if anybody has any advice for or against
using it.

Would anybody like me to send them some miserable Scottish weather?
Gary

-- 
Dr Gary Paterson
University Department of Neurology
Southern General Hospital
Glasgow, G51 4TF, Scotland.
Email: gora16@udcf.gla.ac.uk
Phone: 0141-201-2511   Fax: 0141-201-2993