Re: Astrophoto ATM scope

[akelly@ghg.net (Albert F. Kelly)]

At 02:25 PM 2/5/97 -0800, you wrote:
>Hi, Cathy,
>
>Point sources such as stars depend solely on aperture for their
>brightness.  This is because no amount of magnification will make them

>...<snip>...

>Extended sources like nebula and galaxies work in a different manner. 
>If you have two scopes, a 12" f/4 and a 12" f/8, the object will appear

>....<snip>...

Mel,
        I have explained the same things many times to others, but I don't
think I have ever done as succinct a job as you accomplished in the few
paragraphs referenced above.
Good job!  I think your posting to Cathy, trying to help her understand the
basic issues and get started in scopes and astrophotgraphy, is a classic.
You have demonstrated one of the foremost purposes of these forums.

Good Skies...:)..    AL Kelly