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36320Re: NGC 6992 "Veil portion" in Ha and OIII bi-colour

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  • Gordon Haynes
    Sep 1, 2008
    • 0 Attachment
      Hi Terry

      I have to agree with you there, while I was colour combining it in Maxim
      DL I liked the look of it better

      Best wishes

      Gordon


      --- In tmboptical@yahoogroups.com, "Terry Tuggle" <tlt284@...> wrote:
      >
      > Gordon,
      >
      > Nice image! I believe I prefer the Ha, OIII, and OIII version.
      >
      > Hope the weather in September works out better for you!
      >
      >
      >
      > Terry
      >
      > http://www.geocities.com/tlt284@.../terryshuntofthemonth/
      >
      > _____
      >
      > From: tmboptical@yahoogroups.com [mailto:tmboptical@yahoogroups.com]
      On
      > Behalf Of Gordon Haynes
      > Sent: Sunday, August 31, 2008 3:58 PM
      > To: tmboptical@yahoogroups.com
      > Subject: [tmboptical] Re: NGC 6992 "Veil portion" in Ha and OIII
      bi-colour
      >
      >
      >
      > Since posting this image I had a couple of suggestions about adding
      data
      > to obtain a blue channel so I have tried two methods
      > 1. Creating a synthetic blue channel from the red and green channels
      > using Noel's tools in Photoshop CS2
      > 2. Using existing OIII in the blue channel and creating an RGB image
      in
      > Maxim DL and then processing it in Photoshop CS2
      > I have posted the images on my website
      > http://www.imagingt <http://www.imagingtheheavens.co.uk>
      heheavens.co.uk
      > <http://www.imagingt <http://www.imagingtheheavens.co.uk/>
      heheavens.co.uk/>
      > in the nebulae section of the image gallery along with the other
      images
      > for comparison, I would be interested to know what people think
      > --- In tmboptical@yahoogro <mailto:tmboptical%40yahoogroups.com>
      ups.com,
      > "Gordon Haynes" gphaynes2006@
      > wrote:
      > >
      > >
      > > Hi all
      > >
      > > Well according to the records August has been the wettest month on
      > > record and I can believe that. The weather was looking a bit more
      > > promising last night and following a suggestion from a fellow imager
      I
      > > had another go at NGC 6992 but this time I added some OIII data to
      it
      > to
      > > make a bi-colour image. Luckily the sky stayed cloud free long
      enough
      > to
      > > get 9x10 minutes unguided subframes for each channel. The seeing was
      > > poor due to very faint mist in the air later in the evening and the
      > sky
      > > never got totally dark despite no moon being present. The subframes
      > were
      > > dark subtracted (10 darks), then aligned and combined using median
      > > combine in Maxim DL and then the two resulting master frames were
      > colour
      > > combined in Maxim DL using Ha for red and OIII for green. The
      > resulting
      > > colour image was then processed in Photoshop CS2. Image was taken
      > > through my TMB 115 with SX H36
      > >
      > > I have enclosed the full widefield version as well as a cropped
      > closeup
      > >
      > > NGC 6992 in Ha and OIII widefield
      > > <http://www.imagingt
      > <http://www.imagingtheheavens.co.uk/USERIMAGES/NGC6992colour.jpg>
      > heheavens.co.uk/USERIMAGES/NGC6992colour.jpg>
      > >
      > > NGC 6992 in Ha and OIII closeup
      > > <http://www.imagingt
      > <http://www.imagingtheheavens.co.uk/USERIMAGES/NGC6992colourcrop.jpg>
      > heheavens.co.uk/USERIMAGES/NGC6992colourcrop.jpg>
      > >
      > > Thanks for looking and hoping for a better September
      > >
      > > Best wishes
      > >
      > > Gordon [:)]
      > >
      > >
      > >
      > > [Non-text portions of this message have been removed]
      > >
      >
      > [Non-text portions of this message have been removed]
      >
      >
      >
      >
      >
      > [Non-text portions of this message have been removed]
      >
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