Thread: Merging
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Old 27-04-2018, 11:55 AM
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Paul Haese
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Join Date: Jan 2009
Location: Adelaide
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Quote:
Originally Posted by gregbradley View Post
How do you measure the FWHM? I find it a somewhat unreliable measure. In CCDstack you'll get quite different FWHMs if you click on different stars.

Greg.
I usually use CCD Inspector for the determination of FWHM as a whole but sometimes view the live images on Maxim. That tends to be tighter generally but I think CCD Inspector gets it right most of the time.

Quote:
Originally Posted by alocky View Post
As others have noted it's beautifully sharp and detailed! I think this is the first time I've seen the blue tinge in the lower of the antennae too.
cheers,
Andrew.
Thanks Andrew, I had a bit of a look around and it is there but fainter in other renderings.

Quote:
Originally Posted by PRejto View Post
Really nice image Paul!

I do wonder just a bit about the colour of the lobe on the left as it is pretty blue compared to several other images posted here in the last year such as mine and Marc's (last season) and Goeff's just recently. Perhaps that is responsible for the bluish antennae?

Anyway, terrific result!

Peter
Thanks Peter. Rolfs image shows a fair bit of blue. My treatment was to do saturation evenly over the entire galaxy. All the colour was taken at new moon and in skies of 21.7. I also took my blue data at the meridian to prevent blue extinction.
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