Re: [APML] Which way the corrector plate?

["Daniel Reyna" <dreyna14@earthlink.net>]

Mark it on the edge with a marker pen and put it back how and where you
found it.  I did that with my C8 when I disassembled it and it works just
fine.

Daniel

http://home.earthlink.net/~dreyna14/astro.htm

----- Original Message -----
From: "Robert Reeves" <reeves10@swbell.net>
To: <astro-photo@seds.org>
Sent: Friday, May 31, 2002 3:38 PM
Subject: [APML] Which way the corrector plate?


> OK gang, here is a real dumb question.  I know this isn't an ATM
discussion,
> but there are some good optical folks out there. Which way does a Schmidt
> corrector plate go, curved side in toward the mirror or curved side
outside?
>
> No, I haven't dismantled something and made a mistake (YET!), but I have
> alsways seen the s-shaped curve of a Schmidt corrector shown on diagrams
as
> being away from the mirror.  It is this way in the owner's manuals and
> nearly everything else I have seen, including such authoratative
refferences
> as Gregory Smith's Practical Computer-Aided Lens Design (p. 381).  But in
my
> lunch hour reading of Rutten and van Venrooij's Telescope Optics I see not
> one but two illustrations showing the curved face of the corrector toward
> the mirror (p. 76 and p. 78).  I am assuming an editing error got past
them
> and the Rutten and van V illustration is incorrect.
>
> Any coments before I pop the corrector out of my Schmidt camera and really
> confuse myself?
>
> Robert Reeves                      reeves10@swbell.net
> 520 Rittiman Rd.                   www.robertreeves.com
> San Antonio, Texas 78209    210-828-9036
> USA                                     29.484  98.440  200 meters
>
>
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