Arp 271 (NGC5426/7)

[Geoff45]

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.

[strongmanmike]

Excellent result Geoff. My..?.. arhem :whistle: radar was registering... but I think you have used it pretty well here, nice job on this, they really are a super looking pairing :thumbsup:

Mike

[Retrograde]

Very, very nice Geoff. Loving the colours and detail and all the little background galaxies in the field are an added bonus.

[astroron]

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-final-image-interacting-galaxies-ngc-5426-and-ngc-5427/
Cheers:thumbsup:

[Atmos]

Lovely Geoff :thumbsup:
As Mike says, borderline ;)
And as Ron mentions, compares well to the "big boys"

[Slawomir]

A beautiful image Geoff.

Note: Dropping background brightness a notch would have allowed the...vermis to go past Mike's radar undetected ;)

[topheart]

Very well done!
Cheers,
Tim

[Geoff45]

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



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.



Thanks Ron. I'd still prefer the 8.2m scope, however.





Thanks Tim and Colin

[Geoff45]

Thanks Suavi
Took your advice, although the old eagle-eye Sidonio would probably still notice.

[strongmanmike]

:lol: well, I was referring to my over sensitive decon radar :P

Mike

[Placidus]

A beautiful image Geoff, well acquired and well processed. Very pleasing. Lots of lovely detail in the galaxies, and lots of distant friends.

[Andy01]

Top stuff Geoff, gotta love colliding/interacting galaxies, a real crowd favourite, well done! :D:thumbsup:

[markas]

Great shot. Nice detail and colours.


Mark

[multiweb]

:bowdown:

[RickS]

A fine pair, Geoff!

[Geoff45]

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.


Thanks a lot Mike and Trish

Thanks Andy. Yeah, I really like interacting galaxies. Must be pretty interesting for any intelligent aliens living there.






Thanks Markas, Marc and Rick

[Jeff]

Super image Geoff.
Lovely image processing, and impressive scale/detail given the small size.
You must be happy with that!

[codemonkey]

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.

[Geoff45]

Thanks Jeff. Yes, I’m much happier with the final result than I was when I looked at the raw data.


Thanks Lee. Yep, the Arp catalogue is a good inspirational source.

[Paul Haese]

Nice silky smooth image with loads of detail. Nicely done Geoff.

[Geoff45]

Thanks Paul. I have been improving my noise reduction techniques—no plastic background, some residual pleasing high frequency noise left in the background.
Geoff

[Ryderscope]

A fine pair to be sure :thumbsup: