PixInsight > Gallery

m106 LRGB

(1/2) > >>

jeffweiss9:
Here's a 7.1hr LRGB of one of my favorite galaxies, M106, taken from a pretty dark site:

http://www.astrophotogallery.org/showphoto.php?photo=9612&title=m106-lrgb&cat=500

Thanks for looking.
-Jeff

dayers:
I love the delicate aura (for want of a better word) surrounding the galaxy arms. Great shot of a pretty tough object.

Dave

JGMoreau:
Very mice image Jeff.

I notice the background has those faint light patches, for lack of better
vocabulary ^-^

I have the same on my images.
How can i correct this ?

Jean Guy Moreau

jeffweiss9:
Thanks on the image, Jean-
   But good question on the blotches in the background and maybe an expert will answer.    I think they are associated with ACDNR, particularly at larger scales, and have tried to avoid them myself by doing as much noise reduction as possible with MMT in linear stage instead.  However, I did later use ACDNR here.  Once they're in the image, all I know how to do is darken the background a bit so they aren't as noticeable.  I just did that here but it is not a good solution.
-Jeff

Geoff:
You could try using Atrous wavelets for noise reduction to avoid the blotches.  Harry has a video here http://www.harrysastroshed.com/at%20noise.html
Geoff

Navigation

[0] Message Index

[#] Next page