Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  NGC 3550  ·  NGC 3552  ·  NGC 3553  ·  NGC 3554  ·  NGC 3558  ·  NGC 3561  ·  the Guitar
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Abell 1185 Galaxy Cluster, 



    
        

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Abell 1185 Galaxy Cluster
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Abell 1185 Galaxy Cluster

Getting plate-solving status, please wait...
Abell 1185 Galaxy Cluster, 



    
        

            sydney
Abell 1185 Galaxy Cluster
Powered byPixInsight

Abell 1185 Galaxy Cluster

Technical card

Imaging telescopes or lenses: Celestron c14 EdgeHD Celestron C14

Imaging cameras: SBIG ST-10XME

Mounts: Astro-Physics 900 GTO

Focal reducers: Celestron Reducer 0.7x

Filters: Luminance  ·  Astrodon I-series


Dates:April 2, 2021April 9, 2021

Frames:
Astrodon I-series: 45x480" (6h) bin 2x2
Luminance: 101x600" (16h 50') bin 1x1

Integration: 22h 50'

Avg. Moon age: 23.62 days

Avg. Moon phase: 38.74%


Basic astrometry details

Astrometry.net job: 4451709

RA center: 11h10m56s

DEC center: +28°4015

Pixel scale: 0.511 arcsec/pixel

Orientation: 99.363 degrees

Field radius: 0.187 degrees


Resolution: 2184x1472

Data source: Backyard

Description

Abell 1185 is a galaxy cluster visible through the southwest edge of Ursa Major. The cluster contains at least 82 galaxies at a distance of about 400 million light-years from Earth. The most prominent galaxies in this image are elliptical galaxies, but many spiral, lenticular, and irregular galaxies are also seen. The blue structure at lower right is part of Abell 1185 and is also listed in Halton Arp’s Catalog of Peculiar Galaxies as Arp 105. This structure is reported to be formed from the collision of a spiral (NGC 3561A) and an elliptical (NGC 3561B) galaxy. This merger apparently created star–forming tidal dwarf galaxies at the ends of the tidal tails emanating from the spiral. Arp 105 is often called “The Guitar” as it appears to have been designed by guitar innovator Leo Fender (who remarkably never learned to play the guitar). The Hubble Space Telescope confirmed the presence within Abell 1185 of many globular star clusters that are not gravitationally bound to any individual galaxy. These star clusters are known to be roaming around Abell 1185 in search of the concert that Fender will never play.

Links to online references used in this narrative:

[url=”APOD:]APOD: 2005 November 22 - A Galactic Collision in Cluster Abell 1185 (nasa.gov) [/url]

[url=”The]The Lumpy Cluster Abell 1185 - NASA/ADS (harvard.edu) [/url]

[url=”Abell]Abell 1185 | British Astronomical Association (britastro.org) [/url]

[url=”The]The globular cluster systems of Abell 1185 - NASA/ADS (harvard.edu) [/url]

[url=”https://www.aanda.org/articles/aa/pdf/2011/04/aa15939-10.pdf“]https://www.aanda.org/articles/aa/pdf/2011/04/aa15939-10.pdf [/url]

[url=”ARP]ARP Atlas of Peculiar Galaxies (caltech.edu) [/url]

[url=”901063.pdf;sequence=1]901063.pdf;sequence=1 (herts.ac.uk) [/url]

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Histogram

Abell 1185 Galaxy Cluster, 



    
        

            sydney