Re: [APML] Exposure Question

["William R. Mattil" <wrmattil@ix.netcom.com>]

Brian Larmay wrote:

> Skyfog does not let me go any longer then this.
> 
> I do not comprehend how others can or need to go longer then this unless
> they stop down incredibly.

Brian,

>From a "good" location.

http://www.celestial-images.com/Cygnus67.html

Pentax 6x7 105mm lens at f/4. I regularly shoot 60 minutes, even at
f/2.8. But ..... as you said so eloquently. "Sky-Fog" Not really a
problem if its dark. Though I do tend to shorten the exposure a bit when
doing Sagittarius. It just seems to be "hot" And the prime focus stuff
is also usually 1 hour at f/4 as well. Thats on E200.


Regards

Bill

-- 
William R. Mattil	|                              
wrmattil@ix.netcom.com	| http://celestial-images.com      
(972) 399-4106		|
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