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Re: [APML] Exposure Times

Steve,

I went 2 hours on Provia 400F on ngc7331 on a 11" sct at f/11.5. Good tracking, good focus, but Not enough exposure. My 'scope is now on ngc7331 and I am trying going to go for 3 to 4 hours. I love the image size at f/11.5, but the time gets awful long... 

I will let you know if I picked up any image density going from 2 hours to 3 or 4.

Tony P.
Kopernik Observatory
Vestal NY
www.darkstarimages.com





Steve Lindsey <stevelindsey@earthlink.net> wrote :

> Hi folks!  Been a while since I've been making much progress.
> 
> I'm going out tomorrow night and barring wind will probably try these on
> Provia 400F.  What exposure times do you recommend at f11 on my 10" SCT?
> 
> Helix Neb
> Cone Neb
> M1
> 
> I'm thinking going pretty long at f11.
> 
> Steve
> 
> 
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