Re: [APML] astro camera idea

[Matt BenDaniel <matt@starmatt.com>]

Bobby,

How about just an adaptor to attach a stock Pentax 67 to the newt OAG?
You'd get no vignetting (due to the camera body itself) within the
central 24mmx36mm area.
...as long as you can deal with fewer available color negative films.

Matt

Bobby Middleton wrote:
> 
> I want to try something with one of my Nikon F's. I want to see about
> removing the lens mount assembly, the mirror, and trimming the inside of the
> throat to make the camera opening larger to stop my vignetting I get when I
> shoot my 12.5" newt. In a normal composition the corner vignetting isn't
> that bad, but for mosaics it's a major problem to remove the darker corners
> so they blend into the other frames easily. Besides the corners, the frame
> at top front of the camera where the mirror slaps up against leaves a
> horozontal band of lesser illumination all the way across the top of my
> negatives.
> I would need a special connection machined to mount to the front of the
> camera that would let me hook up to my newt OAG. This will have to match the
> correct spacing distance to retain critical focus. Also a dummy camera for
> composition and focusing will be necessary.
> Is my idea taking the long way around to get somewhere? There are some
> Taurus astrocameras made just to solve this problem but I did not like them
> at all. Thoughts? Suggestions?
> Bobby Middleton
-- 
Matt BenDaniel
http://starmatt.com

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