Author Topic: Dynamic Range and Local Contrast  (Read 12702 times)

Offline Enzo De Bernardini

  • PTeam Member
  • PixInsight Addict
  • ***
  • Posts: 274
  • Resistance is futile.
    • Astronomí­a Sur
Re: Dynamic Range and Local Contrast
« Reply #15 on: 2011 October 07 12:46:19 »
Harry, seems to have an error in the image path code (error to load in FF 7.0.1) Maybe something like this in the flashvars work:

Code: [Select]
zoomifyImagePath=/Image html/zoommcocoon2011/cocoonjpeg2011/cocoon-full
Regards,

Enzo.

Offline Harry page

  • PTeam Member
  • PixInsight Jedi Knight
  • *****
  • Posts: 1458
    • http://www.harrysastroshed.com
Re: Dynamic Range and Local Contrast
« Reply #16 on: 2011 October 07 12:50:21 »
Hi

Sorry the zoom thing may be causing a problem  :o  But if you look below the zoom box there is a link to a std high res version

Harry
Harry Page

Offline sleshin

  • PixInsight Old Hand
  • ****
  • Posts: 431
Re: Dynamic Range and Local Contrast
« Reply #17 on: 2011 October 07 13:38:25 »
That's a great image, Harry. The stars do indeed look very nice and colorful. I'm going to have to try and figure out Vicent's star method.

Steve
Steve Leshin

Stargazer Observatory
Sedona, Arizona

Offline Harry page

  • PTeam Member
  • PixInsight Jedi Knight
  • *****
  • Posts: 1458
    • http://www.harrysastroshed.com
Re: Dynamic Range and Local Contrast
« Reply #18 on: 2011 October 08 12:29:53 »
Hi

I am sure a man with more brains than me could script the star bit , seems like a challange to me


Regards Harry
Harry Page

Offline marekc

  • PixInsight Addict
  • ***
  • Posts: 177
Re: Dynamic Range and Local Contrast
« Reply #19 on: 2011 December 28 18:39:42 »
I have a question about this tutorial. I suppose that Vicent would be the person most likely to be able to clarify this point:

I have been following along with the tutorial, using some M31 data I shot in October. I am having some trouble following the method around Figures 14 and 15. From the looks of Fig. 14, it appears that the PixelMath operation will be applied to an image (`Replace Target Image' is checked).

But which one?

Three images are shown in the PixelMath expression: MS, MS_LS, and HDRWT_LS. Should the PixelMath operation be applied to one of these?

Here's another thing I'm confused about: The tutorial's text gives the impression that the PixelMath expression is being used to modify the HDRWT image. But that's not one of the images in the Expression. Can we (and should we) apply the PixelMath expression to the HDRWT image, if it's not *in* the expression?

Thank you for the clarification,

Marek