Hi Dan,
Ahhh hah! The secrets of CCD imaging being revealed. <kidding>.
The luminance images were a combination of 5-minute integrations. I
have troubles with satellites and airplanes ruining images, so 5
minutes is a reasonable compromise. The CCD is non-ABG which also
creates issues with blooming across the surface. I love it for the
short exposure requirements though.
Clear skies,
~john

--- In ccdimaging2@yahoogroups.com, "Dan Wolk <dorc@c...>" <dorc@c...>
wrote:
> Sweet Image :) Are you taking multiple images and combining them or
> just single shots?
>
> Dan NM
>
>
> --- In ccdimaging2@yahoogroups.com, unukalhai <no_reply@y...> wrote:
> > Finished processing this one today. The snow is coming down pretty
> > hard, so hopefully this will remind people of the wonderful clear
> > skies of New Hampshire (when they happen!).
> >
> >
> > M-81 Bode's Nebula (Galaxy in UMa)
> > Takahashi CN-212 in Newtonian Mode
> > SBIG ST-7 non-E non-ABG & CFW-8 filters
> > Luminance: 50 minutes
> > Red: 10 minutes
> > Green: 10 minutes
> > Blue: 24 minutes
> > Date: 21-February-2003
> >
> > http://www.regulusastro.com/regulus/photos/text/m81lrgb_cn212.html
> >
> >
> > Enjoy,
> > ~johnb
> > NRO
> > http://www.regulusastro.com/