I'll try here

Posted in the ATM forum first, no takers. I just got an ancient sliding IPD adjust microscope binoviewer that I'm converting for astro use. All the optics are aligned, but are dirty. How can I clean them without getting them out of alignment/collimation, damaging coatings (if there are any) etc.? Also there is a good deal of rust on the ep tubes- but will what usually cleans that damage the optics (vapors)?

Thanks,
Jess Tauber

Jess,

Is there a way of removing the covers - if any - to get access to the prisms or mirrors? If so, you might be able to use a small soft brush to flick off dust, then a cotton Q-Tip moistened with lens cleaner to GENTLY clean off any film on the prisms. For cleaning lenses and prisms I use a "Safe for coated optics" eyeglass cleaner.

If you can remove the eyepeice holders for de-rusting that would be best.

I converted a Zeiss microscope head about 5 years ago and the results were great. I had to remove the 45 degree prism and housing and re-attach the nosepiece to the bottom of the housing. My unit had covers that pulled off each side revealing the optics. Another option is to contact Harry Siebert at www.siebertoptics.com I remember reading that he cleans and collimates binoviewers - and not just his own.

Good luck with your project.

Hi Jess. I have an older microscope which should have great optics. I've been thinking about checking them out and trying to convert them to my 10" Meade SCT. Here's my email address: [email protected]. Drop me a line and perhaps we can cooperate and help each other. Thanks Michael