[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: [APML] Interesting...Supra 400
--- westergren <westergren@netzero.net> wrote:
> It's the filter that's shifting the color. We need to get together
> soon and
> I will show you what Supra 400 can really do. When I tried the
> Lumicon Deep
> Sky filter on galaxies, I got a LOT of that purple shift.
Won't the filter also cause you to need much longer exposures? I can
say this: at f/10 Supra needs 45 or 50 minutes just to get warmed up.
Depending on your sky conditions you can go for at least a couple of
hours. At f/10 the film will be slower to respond to skyglow. Try
longer exposures, at least to find out what your limits are.
Alan
__________________________________________________
Do you Yahoo!?
Yahoo! Tax Center - File online, calculators, forms, and more
http://tax.yahoo.com
_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo