"Colin A. Haig" wrote:

> I was wondering if any of you have any mods for light leak in the JMI
> NGF-S. I have an older model NGF-S which is not "light tight" around the
> bearings and edges, and it is in need of some sort of covering or something
> to make it more light tight. We just got a new model for the 16" LX200
> which is a much better design, but has some light leak around the bearings.
> Any tips would be appreciated.
> Thanks,
> Colin Haig
> Hamilton

The light leaks in the JMI focusers has been a problem from day one. I have
had two of these units dating back to three years or so ago. They plane and
simple leak badly. There are only two solutions that I know of at the moment.
One is to not extend the tube beyond half way. This limits the travel to only
6 mm but that is enough for a fine focuser. The other is to wrap the thing in
an opaque black bag.

Too bad such a nice unit (I love it) has so many leaks. These problems have
been discussed on the web and are discussed as well on my web site.

Doc G <http://www.mailbag.com/users/ragreiner>

View index by [date] [author] [subject]
Previous message: Re: [M]: [Short tube 80] As guide scope, R. A. Greiner
Next message: Re: [M]: driving south, Don Ahlskog
Next message in thread: Re: [M]: Any tips on NGF-S Light Leaks?, Ric L Ecker
Previous message in thread: [M]: RE: Any tips on NGF-S Light Leaks?, Email address hidden