M31 mosaic image

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AndyG
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M31 mosaic image

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At last month's new moon I was experimenting to see if I could do something wider field. I put my .67 focal reducer on my refractor and did a 4-panel mosaic of Andromeda.

You can see some interesting detail if you click on the image to get a higher resolution version. The processing turned out to be extremely challenging, since the light pollution gradients made stitching the panels together extremely difficult. I learned a lot about the PixInsight DBE tool used to minimize the gradients, but despite spending a lot of time on it, the seams are still visible if you look.

Acquisition details here.

Thanks for checking it out.

Image
Andy
Bruce D
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Re: M31 mosaic image

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People we must stop this poor man. He can't be using science to get these views, he must have gone over to the dark side. It's witchcraft I tell you, WITCHCRAFT!!

Andy that is stunning-
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Apollo XX
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Re: M31 mosaic image

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Andy, that's really good! I'm not seeing the seams, and the eveness of the exposure right down to the core is super!

Mike M.
"The purpose of life is the investigation of the Sun, the Moon, and the heavens." - Anaxagoras
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DonB
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Re: M31 mosaic image

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Andy,
Extraordinary image ! As a newbie just getting into imaging I feel like a little leaguer watching Davis Ortiz take batting practice. :mrgreen: :mrgreen:
Don
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When I was 21, I could not believe how much he had learned in 3 years."
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WCGucfa
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Re: M31 mosaic image

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I've got it! He's an alien with a souped up spacecraft that he just zooms into the heavens, gets a shot and
posts it to our site. AMAZING!!!!

BG
Last edited by WCGucfa on Fri Nov 15, 2013 9:30 pm, edited 1 time in total.
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Apollo XX
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Re: M31 mosaic image

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So I just poked it up to full size to have a look around...is that spiral arm detail I'm seeing in M110??? :shock:

Mike M.
"The purpose of life is the investigation of the Sun, the Moon, and the heavens." - Anaxagoras
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bluemax
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Re: M31 mosaic image

Unread post by bluemax »

Andy, I don't care if you ARE an alien imager from outer space, I just enjoy changing my screen saver to your images all the time. Thanks again for sharing your fine work.
Frank N

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Bruce D
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Re: M31 mosaic image

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Yes it is Mike, I saw that myself :shock:
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WCGucfa
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Re: M31 mosaic image

Unread post by WCGucfa »

Frank, thanks for the great idea. I'm a little slow!
My screen saver is now beautiful!

Andy, you are an imaging GENIUS! I should be raking leaves, but I keep staring at your images. :shock:

Bill G.
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AndyG
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Re: M31 mosaic image

Unread post by AndyG »

Thanks for the compliments and encouragement, all!
Apollo XX wrote:So I just poked it up to full size to have a look around...is that spiral arm detail I'm seeing in M110??? :shock:
Here's a crop of M110 from the image.

Image

There is definitely something there in the data. I tried some extreme stretching to bring it out.

Image

The data is too noisy and I think too low resolution to get much detail. It would be interesting to image M110 at longer focal length and longer exposure time to better capture the details.

There's also at least one distant galaxy in the background in the image above, like the one between 9 and 10-o'clock.
Andy
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