From: slattts (slatter1_at_antispamdomain.not)
Date: Wed Oct 08 2003 - 14:02:22 EDT
Johannes,
Congrats on an inspiring image, you continue to set a high standard
for all of us to aspire to.
-- Denis S.
--- In digital_astro_.at._yahoogroups.com, "Johannes Schedler"
<j.schedler_.at._p...> wrote:
> My thanks to the group!
>
> Good old M31 always was an object of desire for me.
>
> I used the best avilable conditions -good transparency and a dark
sky
> for this over several nights, temperature dropped to near 0C.
>
> 40 x 5 min frames were used for the 2-part mosaic with the 4" TMB
> refractor at f/5 coupled to the 10D at ISO800, most of them in raw
> mode; Image calibration, extended addition stacking in ImagesPlus;
> strong curves, light unsharp mask.
>
> Colors were quite weak in the raw frame, the blue outer halo had to
> be enhanced with the color balance feature, saturation was
increased.
>
> Neatimage was used to suppress the noise.
>
> Rob Gendler's layer mask techique was used to pronounce the dust
> lanes:
> Select with the lasso the bright parts that you want to enhance,
then
> copy it to a seperate layer, increase the contrast strongly, then
> blend the 2 layers with the darken feature with the right amount,
> this has to be adjusted to the object to get the desired effect.
>
> Johannes
>
> --- In digital_astro_.at._yahoogroups.com, "Tom Duggan" <tduggan_.at._f...>
> wrote:
> > Johannes Schedler .... Very nice work
> > as always Johannes!
> >
> > As is custom, please provide as much detail
> > as you would like about how the final image
> > was attained.
> >
> > Ginger Mayfield
> > Tom D[uggan]
> > Moderator Team
------------------------ Yahoo! Groups Sponsor ---------------------~-->
Buy Ink Cartridges or Refill Kits for your HP, Epson, Canon or Lexmark
Printer at MyInks.com. Free s/h on orders $50 or more to the US & Canada.
http://www.c1tracking.com/l.asp?cid=5511
http://us.click.yahoo.com/mOAaAA/3exGAA/qnsNAA/N_XolB/TM
---------------------------------------------------------------------~->
Before posting an image to our group please read the space mangement guidelines:
http://groups.yahoo.com/group/digital_astro/files/Photos%20Section%20Space%20Management%20Guidelines
Please check the digital_astro FAQ at:
http://www.szykman.com/Astro/AstroDigiCamFAQ.html
Be sure to visit the digital_astro Gallery and Archive at:
http://velatron.com/dca/gallery
http://velatron.com/dca/archive
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
This archive was generated by hypermail 2.1.7 : Wed Oct 08 2003 - 13:02:59 EDT