Re: [APML] Exposure Times

["Steve Lindsey" <stevelindsey@earthlink.net>]

Thanks Bert & Tony.  I should have dark skies and I doubt I can go too long.
Someone mentioned a while back that they thought the Provia pooped out after
about 60 to 90 min but I'm thinking 120 sounds right.  Interested in your
results.

Steve



> 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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>
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