RE: [APML] Cygnus mosaic (was Fish on the Platter)

["John C. Mirtle" <mirtle.j@home.com>]

Kent;
	With software like Registar, who needs matched focal lengths? For a higher
level of entertainment, try this with 3 14" Schmidts..... :^)

John Mirtle
Calgary, Ab. Canada


-----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On
Behalf Of KGKIRKLEY@aol.com
Sent: Wednesday, September 05, 2001 11:01 PM
To: astro-photo@seds.org
Subject: Re: [APML] Cygnus mosaic (was Fish on the Platter)

Loke:
Actually it would be possible to use 3-8 inch Schmidt's for tri-color work.
They could all be mounted on the same mount, each aligned to the other.
It would be nice if they all had the same exact focal length. (mine is
299mm,
yours?)
Three N2 or dry air purge systems.
The problem would come in the different exposure times for the filters,
requiring staggered beginning or ending times which would be best
accomplished with some kind of shutter system, one for each camera (as
opposed to the "hat trick")
Kent Kirkley


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