AstroGab

Astrophotographers hangout. Invite friends and notice chat bar on bottom.

NA&PelicanNebulae Halpha & Luminance Combined

A blending of a previous two-frame luminance composite (Tak FSQ106 & STL11000) with a two-frame H-alpha composite (Tak TOA150 & STL11000). I was attempting to benefit from the higher resolution of the TOA150, greater level of detail in the Halpha image, and yet display the faint regions of nebulosity that the luminance image captured but the Halpha exposures missed.

The image was cropped to the dimensions and orientation of the narrower field of view in the H-alpha mosaic. All frames in both mosaics were 6x600s exposures processed in MaximDL5Pro, PhotoshopCS3, Noel Carboni's Astronomy Tools, and Annie;s Astronomy Tools...

Rating:
  • Currently 0/5 stars.

Views: 45

Comment

You need to be a member of AstroGab to add comments!

Join AstroGab

Comment by Derek Baker on September 12, 2011 at 5:09am
Thanks Steve! Glad you like it. :-)
Comment by Derek Baker on September 8, 2011 at 6:33pm
Thanks Steve!

Believe it or not, there is a bit more detail available if I display only the Halpha image and sharpen it alike crazy. However, IMHO, then the Ha image loses its 'depth' and the nebulosity (especially in the Pelican) almost looks like a paper cutout (if that makes sense...) I love those images you see by the experts that have such a 3-d quality to them, and I want to learn how to replicate that

Thanks again for your 'pat on the back'! :-).
Comment by Steve Coates on September 8, 2011 at 4:00pm
Excellent image Derek. You picked up some incredible detail especially in the Pelican region.
Comment by Derek Baker on September 8, 2011 at 3:39pm
Thanks Marc!

I definitely used "Remove Panda Eyes" as I sharpened the heck out of the Halpha image, so that the details would stand out against the more wispy background provided by the Luminance image.

I was going to use "Remove All Stars" from the Luminance image, but I found the way I added in the Halpha frames kept the stars small enough. On top of that, I decided that I wanted the stars to have some size and variation in size for some added 'depth', so I blended in the slightly fatter Luminance stars too.

I hope that stars don't look too bloated, but if people find they are, then I will go back an redo the Luminace frames before adding the Halpha.

Thanks again for your encouraging words Marc.

cheers, Derek
Comment by Marc Basti on September 8, 2011 at 12:55pm
Derek, nice feel to that pic, I like it. What did you use in Annie's? I've only made use (multiple x's) of "remove all stars" so far. Marc
Comment by Derek Baker on September 8, 2011 at 7:00am
I noticed that the uploaded image has lost some of the fainter nebulosity, especially in the Gulf of Mexico region....

About

© 2024   Created by Charles Dunlop.   Powered by

Badges  |  Report an Issue  |  Terms of Service