View Full Version here: : Another M20 Narrowband
rat156
10-07-2009, 01:00 AM
Hi All,
A reprocess of the original data for those that like things red and blue...
I used a synthetic green channel for this one and removed the SII data.
I cropped the image so I could post here.
Cheers
Stuart
Alchemy
10-07-2009, 07:40 AM
well more impressive detail, .... we will sound like we are never happy, but it looks as though you are presenting it aka a RGB style image, and im looking for the reflection neb which isnt there in any volume.
As for the decon discussion in the last image, when i used a longer FL i used it in this manner.
Decon way past what the stars could handle, and i mean waaaay past. then get the pre decon and use the color range tool to select the stars ( expand and feather) then paste onto the post decon image. you may have to tinker with the overall contast or brightness of the post decon as i found it was a tiny bit darker after decon. you could do the same for the stars with an image that had less decon and paste over... just add to taste
imaging is about extracting the last bit of detail possible, and this worked very effectively for me.
clive
Hagar
10-07-2009, 09:12 AM
The detail is fantastic. I like the red much more than some of the other colours. Lovely the way the neat little doubles are resolved in the center of the nebula. In most cases you can see they are there but very rarely do you see them split like this. I would still like to see it blended with some RGB to show the reflection nebula around.
Still Great stuff
rat156
10-07-2009, 12:53 PM
Hi Clive,
Only because of the people that said it was too green previously...
Waiting for the moon to go away before I do the LRGB subs, and my next door neighbor to stop lighting their open fireplace, whose chimney is on the East side of the observatory, really screws with the local seeing in the East until about 11pm. I could ask that they don't light it on the clear nights, but I suspect I may get a refusal.
I think I've pushed the resolution as far as I want to, I'm a bit conservative when it comes to this, anything much more makes it look overprocessed. This is the dilemma, when to stop processing?
Cheers
Stuart
rat156
10-07-2009, 12:56 PM
Well the green version is scientifically right, the nebula is dominated by Ha (as evidenced by the normal RGB shots), so in Hubble palette it should be predominantly green. Wait for the moon to go away (and some clear nights) and I'll do the LRGB version.
Cheers
Stuart
Alchemy
10-07-2009, 01:50 PM
ahhhh you will never please everyone:P. best to please yourself :), and i understand what you say about how far to go.
your images have been of a consistently high quality and detail, always a pleasure to look at. the final with the extra added should be a beauty.
clive.
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