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Old 03-06-2018, 08:41 AM
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Arp 271 (NGC5426/7)

Arp 271 is a pair of similarly sized interacting spiral galaxies, NGC 5426 and NGC 5427. It is not certain whether the galaxies are going to eventually collide or not. They will continue interacting for tens of millions of years, creating new stars as a result of the mutual gravitational attraction between the galaxies, a pull seen in the bridge of stars already connecting the two. Located 90 million light-years away, the pair is about 130,000 light-years across.

The galaxies are each about 3' across, so not large.

https://www.astrobin.com/349612/0/?nc=
Higher res here
https://www.astrobin.com/full/349612/0/


I had some data from this object from about 4 years ago. I added another two hours at the star party. So two different cameras and 4 years separation.


Telescope: 12.5" Planewave CDK
Mount: AP900
Camera 1: QSI@-20---2 hours
Camera2: FLI Proline@-30----2 hours
FOV: about 20' x 20'
Processing: PixInsight


I still need some good luminance data to sharpen things up a bit more.
Attached Thumbnails
Click for full-size image (ngc_5426_v2_small.jpg)
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Last edited by Geoff45; 03-06-2018 at 09:46 AM.
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Old 03-06-2018, 09:05 AM
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strongmanmike (Michael)
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Excellent result Geoff. My..?.. arhem radar was registering... but I think you have used it pretty well here, nice job on this, they really are a super looking pairing

Mike
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Old 03-06-2018, 09:54 AM
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Very, very nice Geoff. Loving the colours and detail and all the little background galaxies in the field are an added bonus.
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Old 03-06-2018, 10:04 AM
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Nice one Geoff,as said elsewhere nice colours
Compare yours to a 8.2 mt scope, very credibly
in my opinion.
https://scitechdaily.com/vimoss-fina...-and-ngc-5427/
Cheers
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Old 03-06-2018, 01:49 PM
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Lovely Geoff
As Mike says, borderline
And as Ron mentions, compares well to the "big boys"
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Old 03-06-2018, 05:20 PM
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A beautiful image Geoff.

Note: Dropping background brightness a notch would have allowed the...vermis to go past Mike's radar undetected
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Old 04-06-2018, 10:30 AM
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Very well done!
Cheers,
Tim
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Old 04-06-2018, 11:37 AM
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Quote:
Originally Posted by strongmanmike View Post
Excellent result Geoff. My..?.. arhem radar was registering... but I think you have used it pretty well here, nice job on this, they really are a super looking pairing

Mike
Thanks Mike. Are you referring to the NR or the decon? (Or both?)


Quote:
Originally Posted by Retrograde View Post
Very, very nice Geoff. Loving the colours and detail and all the little background galaxies in the field are an added bonus.
Thanks Pete. There was a bit of a trade-off here between cropping to highlight the galaxies or leaving the galaxies smaller in a wider field.


Quote:
Originally Posted by astroron View Post
Nice one Geoff,as said elsewhere nice colours
Compare yours to a 8.2 mt scope, very credibly
in my opinion.
https://scitechdaily.com/vimoss-fina...-and-ngc-5427/
Cheers
Thanks Ron. I'd still prefer the 8.2m scope, however.


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Originally Posted by Atmos View Post
Lovely Geoff
As Mike says, borderline
And as Ron mentions, compares well to the "big boys"
Quote:
Originally Posted by topheart View Post
Very well done!
Cheers,
Tim
Thanks Tim and Colin
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Old 04-06-2018, 11:39 AM
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Quote:
Originally Posted by Slawomir View Post
A beautiful image Geoff.

Note: Dropping background brightness a notch would have allowed the...vermis to go past Mike's radar undetected
Thanks Suavi
Took your advice, although the old eagle-eye Sidonio would probably still notice.
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Old 04-06-2018, 12:52 PM
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Quote:
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Thanks Mike. Are you referring to the NR or the decon? (Or both?)
well, I was referring to my over sensitive decon radar

Mike
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Old 04-06-2018, 03:24 PM
Placidus (Mike and Trish)
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A beautiful image Geoff, well acquired and well processed. Very pleasing. Lots of lovely detail in the galaxies, and lots of distant friends.
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Old 04-06-2018, 03:29 PM
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Top stuff Geoff, gotta love colliding/interacting galaxies, a real crowd favourite, well done!
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Old 04-06-2018, 03:40 PM
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Great shot. Nice detail and colours.


Mark
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Old 04-06-2018, 04:01 PM
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Old 04-06-2018, 07:14 PM
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A fine pair, Geoff!
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Old 06-06-2018, 07:18 PM
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Quote:
Originally Posted by strongmanmike View Post
well, I was referring to my over sensitive decon radar

Mike
You’ve no idea of all the various nefarious subterfuges I had to go through to get a halfway decent luminance out of some pretty average data.

Quote:
Originally Posted by Placidus View Post
A beautiful image Geoff, well acquired and well processed. Very pleasing. Lots of lovely detail in the galaxies, and lots of distant friends.
Thanks a lot Mike and Trish
Quote:
Originally Posted by Andy01 View Post
Top stuff Geoff, gotta love colliding/interacting galaxies, a real crowd favourite, well done!
Thanks Andy. Yeah, I really like interacting galaxies. Must be pretty interesting for any intelligent aliens living there.

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Originally Posted by markas View Post
Great shot. Nice detail and colours


Mark
Quote:
Originally Posted by multiweb View Post
Quote:
Originally Posted by RickS View Post
A fine pair, Geoff!
Thanks Markas, Marc and Rick
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Old 06-06-2018, 07:47 PM
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Super image Geoff.
Lovely image processing, and impressive scale/detail given the small size.
You must be happy with that!
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Old 10-06-2018, 02:21 PM
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Nice job, Geoff, thanks for sharing. Gotta love the ARP catalogue. I can't even see any artifacts caused by the decon so I think you did well there.
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Old 11-06-2018, 07:21 AM
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Quote:
Originally Posted by Jeff View Post
Super image Geoff.
Lovely image processing, and impressive scale/detail given the small size.
You must be happy with that!
Thanks Jeff. Yes, I’m much happier with the final result than I was when I looked at the raw data.

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Originally Posted by codemonkey View Post
Nice job, Geoff, thanks for sharing. Gotta love the ARP catalogue. I can't even see any artifacts caused by the decon so I think you did well there.
Thanks Lee. Yep, the Arp catalogue is a good inspirational source.
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Old 12-06-2018, 01:08 PM
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Nice silky smooth image with loads of detail. Nicely done Geoff.
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