Re: ATM ...on homebuilt EQ mounts

["Dan Chaffee" <dchaffee@gvi.net>]

> Drat - thought I was on to something. How about a thick non-drying
silicone
> sealant - anything to 'pad' the play and still allow the seal to be
intact?

There are several types of lubricants that will reduce friction, but 
expecting them to make up for what's lacking in a fitting just won't be 
very effective. I'm not saying a thread bearing can't work; it just
wouldn't be my choice for an easy mount. Again, the wider the diameter
of the bearing, the less play there'll be. If your heart is set on
an equatorial head, there _are_ simple designs that don't require
heavy machining availible. I think one or two may be described
in the List's vast archives.
> 
> >Just make a simple dob mount or basic alt-azimuth.
> 
> But I'm thinkin' I might want to try some photon capturing for
posterity...

You can make an easy equatorial platform upon which the dob is placed. 
Again, see the archives. 

> 
> What's your local club like? You're only about 3-4 hours from me - I'd
> consider coming down for a weekend or so if I could sit in on any mirror
> grinding classes you all might offer...

I'm not currently a member, but the Kansas City club has between 
200-300 members if I recall and I think there is on/off activity 
in instrument making. Maybe Bob Allen could comment further. At any 
rate, you're welcome to drop by my place.

D Chaffee
Kansas City, Mo.