Re: [ATM] Schmidt Camera Quandries

[Dominic-Luc Webb <dlwebb@canit.se>]

On Tue, 2 Nov 2004, dezrteagle wrote:

> ...the process of machining the film holders is very time consuming...
> Thanx-Jim

It need not be... I made mine with two small glass disks cut from a
piece of plate glass and a metal pipe fitted to a drill press. The
two pieces were ground as we usually do for mirrors. In a few minutes,
the concave side had the appropriate curvature, telling me that the
other side must have a corresponding convex curve. You can also use
bottoms of beer bottles (I presume you have ample access to that)...

For an illustration, see section 3.3 on my 310 mm Schmidt page....

http://www.megspace.com/science/stp/catadioptric/310schmidt/310schmidt.html


Again, I just (finally) bought a digital camera, so I can now post
(updated) pics on my web page..



Dominic-Luc Webb

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