RE: [APML] 'Astrophoto Program'

[Saint Machiavelli <saint@manetheren.net>]

I sent a copy to you, including the vbrun300.dll that Scott Barbee sent me last night.

I do have one question about it though. This is for anyone who has played with eyepiece projection photography.

According to this program using a Meade 8" SCT in eyepiece projection mode with a TeleVue Plossl 21mm, the film plane 5' I have an f/stop of f/50.5 and an exposure time of 60 hours to photograph the M1 Crab Nebula on Kodak 400 PPF with the milky way slightly visible.

I think I've drastically missed something in my research on eyepiece projection photography, as I have never had any indication that it would require such an f/stop or take so long.

On the other hand the program has already cleared up some of my calculations on Prime Focus, which helps to explain why my first set of deep sky photo's Triangulum galaxy (M33) came out like they did, all faded and dark.

-----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On Behalf Of warren and amy keller
Sent: Monday, February 19, 2001 4:58 AM
To: apml
Subject: [APML] 'Astrophoto Program'

Does someone have the website with the downloadable program- you plug your optical system in and it gives size of Messier objects on film and exposure hints? I lost it in a system crash. I think it''s at a New England Club's site.

 

Anyone have an extra F2 cable release or 400mm/5.6 that is compatible they'd like to sell?

 

Thanks, Warren!