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

["tan@home.com" <tan@home.com>]

Kent,

    I have never measured the FL of my camera. Have always assumed it was 300mm.
"Registar" should take care of the slightly different FLs. The different exposure
times can be a hassle. One could nudge the mount while attempting to change film
or cover the film etc while the other exposures are performed.

Loke


KGKIRKLEY@aol.com wrote:

>
>
> 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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