Re: [APML] 1st BRC mosaic: heart & baby

["John C. Mirtle" <jmirtle@shaw.ca>]

Hmmmm 108 sq cm = 16.7 sq in. But there were 3 sets of exposures - 2 x E200
and 1 x TP. Looks like you exposed about 50 sq in of film for that image.
Last I checked (but it has been a while) 1 sq foot (12 x 12) is 144 sq
inches so it looks like total film used is just over 1/3 sq feet! So, 6
hours of shooting, 6+ hours of image processing and 0.35 sq feet of film.
Why don't you just get a Schmidt???? :-)

Nice job Bobby!

John Mirtle
Calgary, Ab. Canada

----- Original Message -----
From: "Bobby Middleton" <bobm@koyote.com>
To: <astro-photo@seds.org>
Sent: Monday, November 18, 2002 6:57 PM
Subject: Re: [APML] 1st BRC mosaic: heart & baby


Sorry for the late response John, I had to zip down I-35 for a while down to
Austin and I'm just getting back. No, the collimation issues are hard to see
at web res but the can be seen on 8x10 prints and worse on larger prints.
BTW, those are 6x9 frames. I'm using a borrowed Toya vacuum camera to test
out collimation and film flatness issues. It's a great camera as far as I
can tell. Sq ft? <g> Well, let's see 6 x 9 + 6 x 9=108 sq centimeters. You
Canada guys should be better than we pounds and inches guys. How many sq.
feet does 108 sq cm convert to?
Bobby



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