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Old 11-09-2016, 10:53 AM
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Bassnut (Fred)
Narrowfield rules!

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Join Date: Nov 2006
Location: Torquay
Posts: 5,065
Quote:
Originally Posted by gregbradley View Post
That's a new one. Cool colours and a great effort.

Greg.
Thanks Greg

Quote:
Originally Posted by Placidus View Post
Wow, Fred! That's special!

Trish immediately saw the brightest part of the nebula as a bird flying toward us, head and beak pointed toward our left. It's very obvious when you see it.

When I look at a narrowband image, I basically ignore the stars and look at the nebulosity, which is what you took the photo for. The faint extensions are really something. Crisp and clean and beautiful.

The 2x2 binning was obviously necessary. My impression is that despite being an SNR, there's very little SII in the image.

Is it just conceivable that using H-alpha as luminance is concealing some of the SII, particularly further out where there's less H-alpha?

Wonderful work.

Mike
Thanks Mike. Actually OIII was dimmer than SII. SII is green in this image and Ha red. I had a close look at the distribution Ha (red) was everywhere SII and OIII were and extended much further. So I was comfortable with Ha as lum.

Quote:
Originally Posted by Atmos View Post
Oh right I just assumed that with it being at their facility it would be theirs hehe Pinched optics typically mean that SOMETHING on either the primary or secondary mirror holdings has been over tightened, basically simulates the astigmatism that I have in my own eyes

Stars aside, its great! Just happens to be that a good amount of the data that I have seen come out of iTelescope.net (the actual paid part) has had issues of various kinds. Puts a bee in my bonnet
Cheers Colin. It doesnt have pinched optics, its just the way I tried to fix the elongated stars. Ive now fixed the stars and updated the image.

Quote:
Originally Posted by Slawomir View Post
Interesting and unusual target, awesome effort Fred

Also, we do not get to see images with such long integration every day

Mike's suggestion of adding SII (and maybe OIII) to Luminance might be worth trying, as it could show more information in the Lum.
Thanks Suavi. The Ha was big enough not to hide S!! and OIII, as far as I could see anyway.
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