Re: ATM 3" spherical OK for scope?

["Richard Schwartz" <richas@earthlink.net>]

My first telescope was a 3" f/11 spherical, made from a furniture castor
cup.  I tested it with a contraption made out of a band-aid can.  I put that
baby on Saturn, and it was, "Hey, Dad, come on out here and look at this!"
My father did not approve of mirror making.  He thought it was some weird
kind of trance.   He was probably correct, but so what?

Alas, furniture castor cups and band-aid cans are relics of the last
century.

Richard

----- Original Message -----
From: "Bob May" <bobmay@nethere.com>
To: "atmlist" <atm@shore.net>
Sent: Sunday, June 02, 2002 1:16 PM
Subject: Re: ATM 3" spherical OK for scope?


>
> 3" F10 spheres pretty much are within the Raleigh criteria so they will be
> an excellent pair of mirrors for a binoc.  The making of a set will be a
> nice exercise in making something that works and since you're not dealing
> with very large pieces, you won't feel the expenses so much, nor the
> frustration when things don't go right with the thing.
> Bob May
> http://nav.to/bobmay
> bobmay@nethere.com
> NEW! http://bobmay.astronomy.net
>
>
>