RE: [APML] ELITE CHROME 200 EXPOSURE QUESTIONS

Gary,

I have to agree with Roland on the shorter exposure. I'd push 1 stop on the E200 and go for an exposure of 45-75 minutes. As Stuart says, try different lengths on the same target. It seems to me that Matt BenDaniel uses 90 minutes when he shoots at f5.6 for piggy back camera shots, but he doesn't push the film.

Scott Hammonds

www.creatorsview.com

From: astro-photo-bounces@seds.org [mailto:astro-photo-bounces@seds.org] On Behalf Of StarManGMH@aol.com
Sent: Thursday, March 18, 2004 3:18 AM
To: astro-photo@seds.org
Subject: [APML] ELITE CHROME 200 EXPOSURE QUESTIONS

I received my Lumicon Easy Guider during last full moon and took some shots to learn how to use it. This weekend I'm planning on trying my first guided prime focus shots. My site is about 20 miles from the nearest city so the skies are fairly dark but I do have a few local light issues. My equipment is as follows:

Stellarvue 80mm f6 Achromat

Nikon FE2

Losmandy GM-8

Lumicon Easy Guider

Elite Chrome 200

My questions are concerning exposure times. First of all, should I push 1 stop or shoot at 200? I've read that you should square the focal ratio of the scope. Is this correct or does it depend on the darkness of the site? Can anyone recommend a min. or max. exposure time for this film (pushed or not) using an 80mm Achromat. I realize I'm not going to get the image quality of an Apo but I will be using this scope until later this year when I plan on getting a triplet Apo. I would appreciate any advice or suggestions anyone can give me. Thanks!

Gary