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Old 04-05-2016, 06:11 PM
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Shiraz (Ray)
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Join Date: Apr 2010
Location: ardrossan south australia
Posts: 4,918
Quote:
Originally Posted by strongmanmike View Post
Does it show in Rolfs?
no. however, there is a background in the DSS1 image that has roughly the same structure - attached image shows the DSS1 image and the low spatial frequency background that was extracted. My image has bright and dark bits in pretty much the same places and also shows a gradation in background, increasing towards the lower right corner.

I don't have the depth to get down to the fine structure that Rolf's wonderful image shows, but I tried a bit of enhancement and got generally similar line features and swirls etc. Not worth posting because I did a rough processing job on the stretched image and ended up with a lot of noise.

I guess the main question is whether the low spatial frequency structure is real and if its is, what it could be. I am still not sure, but originally left it in because I have never previously recorded any gradients that distinct (except when my mirrors once got coated in sea mist). Will have a close look at the optics and carefully inspect the subs - and if it turns out that I have a red herring, will reprocess - thanks very much for your help so far.

Quote:
Originally Posted by Paul Haese View Post
An interesting field of view Ray. I found the comparisons between your image and Rolf's in terms of what looks like cirrus to be fairly similar. I think the whole image looks a little blue/magenta to me and the orange stars appear a little muted. That is a minor consideration when you take the time to consider the depth of the image. There appears to be literally thousands of galaxies in the field both near and far, some clearly red shifted quite a lot and those being tiny fuzzy specks. Thanks for posting Ray.
Thanks very much Paul - I will go back and have another look at the colour. Yep, the density of galaxies in this area is astonishing.

Quote:
Originally Posted by RickS View Post
That's a wonderful collection of fuzzies, Ray, and the faint neb is the icing on the cake

Cheers,
Rick.
Thanks very much Rick!

Quote:
Originally Posted by Flugel88 View Post
Wow the Galaxies seem to outnumber the stars.
Lovely image very crisp.
Thanks very much Michael - yes there are lots of galaxies

Quote:
Originally Posted by topheart View Post
Excellent Ray!
Cheers,
Tim
Hi Tim. Thanks very much

Quote:
Originally Posted by graham.hobart View Post
Just magnificent Ray.
A eye popper!!
Graham
Thank you Graham - appreciated.

Quote:
Originally Posted by Andy01 View Post
Pick a galaxy, any galaxy!
Very nice work Ray, well done
Hi Andy. yes, there are a few
Attached Thumbnails
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Last edited by Shiraz; 04-05-2016 at 07:40 PM.
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