RE: [APML] 8" Schmidt camera on Astromart

["cosmos" <cosmos@big.net.au>]

G'day Chris.. welcome back to APML..

your Ozzy mate..
Jim

Director: Nanango TIE-QUT Observatory
www.eese.bee.qut.edu.au/tie/sro


-----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On
Behalf Of Chris Schur
Sent: Thursday, February 21, 2002 9:59 AM
To: astro-photo@seds.org
Subject: RE: [APML] 8" Schmidt camera on Astromart


Chuck, I have to agree with you, you have to really be careful how you even
load the f/1.5 schmidts as to not overwarp the film.  even a mil off is star
dougnuts.  By the way, this is my *first* post on APML.

Chris Schur

Astrophotography: http://www.psiaz.com/schur/astro/index.html



-----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On
Behalf Of Chuck Vaughn
Sent: Wednesday, February 20, 2002 1:35 PM
To: astro-photo@seds.org
Subject: Re: [APML] 8" Schmidt camera on Astromart


Dave,

> I'm not sure either, that's why I asked.  It seems to me that something
> around f/2.5 would be perfect, making the OTA about 40" long.  A higher
focal
> ratio would make focusing that much easier.  Or is speed and field-of-view
> more important?  Opinions?

I've heard from a number of sources that f/2.5 is an optimum speed.

Chuck <aa6g@aa6g.org>


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>