Loading ...
Sorry, an error occurred while loading the content.

68652Re: [ccd-newastro] Flaming Star Nebula with ST8300

Expand Messages
  • Matts Sporre
    Jan 31, 2011
      Hi Bernard,

      Do you have a link to the new image?

      BR
      Matts



      1 feb 2011 kl. 04:06 skrev "Bernard Miller" <bgmiller011@...>:

      > Matts,
      >
      > Thanks. I usually try another method using lab color. Instead of curves, I use Image->Adjustments->Brightness and Contrast and then increase the contrast. I think this is similar to what you did below, but your method I think is better. Take a look and tell me what you think. I also noticed that the color looks better in PS than it does on the WEB page. I have to "over-do it" a little in PS to get the same look on the WEB page.
      >
      > Thanks again for the help.
      >
      > Bernard
      >
      > From: ccd-newastro@yahoogroups.com [mailto:ccd-newastro@yahoogroups.com] On Behalf Of Matts Sporre
      > Sent: Monday, January 31, 2011 2:27 AM
      > To: ccd-newastro@yahoogroups.com
      > Subject: Re: [ccd-newastro] Flaming Star Nebula with ST8300
      >
      > Hi Bernard
      >
      > I like it, color washed out or not it is still a nice image.
      >
      > If you use Photoshop here is a technique that may help.
      >
      > Copy the layer for which you want to increase color vividity (not sure this is an English word) to a new document.
      >
      > Image -> Mode -> Lab color
      >
      > Image -> Adjustments -> Curves
      >
      > This is the normal curves dialogue, but there are some differences compared to working in RGB mode.
      >
      > In the drop down menu "channel" in the curves window you would normalle find Red, Green and Blue. Now you will find Lightness, a and b. a and b are the "color channels". Chose "a".
      >
      > Next is to make a normal contrast enhancement curve (this is what all this is about, increasing the contrast in color space), an s-curve. Then do the same for the "b" channel.
      >
      > As a tip you can place the points on the curve at 63 and -63, and increase the 63 point to 70 (or 80) and decrease the -63 point to -70 (or -80). It is important that these changes are more or less symetrical in this way otherwise you will mess up the color balance of the image.
      >
      > Do the same for both "a" and "b" channel. The "a" channel will affect red and yellow color, while the "b" will affect blue and green.
      >
      > Next copy the layer back to the original PS image.
      >
      > Maybe you already know about this, but it is a powerful method to boos the colors.
      >
      > BR
      > ps always check curves afterwards so that no strange things happen
      >
      > 30 jan 2011 kl. 20:33 skrev "Bernard Miller" <bgmiller011@... <mailto:bgmiller011%40cox.net> >:
      >
      > > Hi,
      > >
      > > Here is my latest attempt at the Flaming Star Nebula. I think the color is a
      > > little washed out so if anyone has ideas on how to improve that I would
      > > appreciate it.
      > >
      > > http://www.azstarman.net/web_links/IC_405.htm
      > >
      > > Thanks for looking.
      > >
      > > Bernard
      > >
      > > [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]
      >
      >


      [Non-text portions of this message have been removed]
    • Show all 6 messages in this topic