Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  IC 1170  ·  IC 1182  ·  IC1170  ·  IC1172  ·  IC1179  ·  IC1182  ·  IC1183  ·  NGC 6039  ·  NGC 6040  ·  NGC 6041  ·  NGC 6043  ·  NGC 6044  ·  NGC 6045  ·  NGC 6047  ·  NGC 6050  ·  NGC 6054  ·  NGC6040  ·  NGC6041  ·  NGC6042  ·  NGC6043  ·  NGC6044  ·  NGC6045  ·  NGC6047  ·  NGC6050  ·  NGC6054  ·  PGC1537110  ·  PGC1538798  ·  PGC1538875  ·  PGC1538912  ·  PGC1539014  ·  And 44 more.
Getting plate-solving status, please wait...
Arp 272 (Abell 2151), 



    
        

            Gary Imm
Arp 272 (Abell 2151), 



    
        

            Gary Imm

Arp 272 (Abell 2151)

Getting plate-solving status, please wait...
Arp 272 (Abell 2151), 



    
        

            Gary Imm
Arp 272 (Abell 2151), 



    
        

            Gary Imm

Arp 272 (Abell 2151)

Imaging telescopes or lenses: Celestron EdgeHD 11

Imaging cameras: ZWO ASI 1600MM Cooled Pro

Mounts: Astro-Physics Mach1GTO

Guiding cameras: ZWO ASI 174 MM Mini

Software: Main Sequence Software Sequence Generator Pro  ·  Stark Labs PHD2 2.6.3

Filters: Astrodon Green 31mm Gen2 I-Series  ·  Astrodon Blue 31mm Gen2 I-Series  ·  Astrodon Lum 31mm Gen2 I-Series  ·  Astrodon Red 31mm Gen2 I-Series

Accessory: Celestron OAG  ·  MoonLite Focuser for EdgeHD 11


Dates:June 16, 2020June 17, 2020

Frames:
Astrodon Blue 31mm Gen2 I-Series: 30x120" (1h) (gain: 139.00) -20C bin 1x1
Astrodon Green 31mm Gen2 I-Series: 30x120" (1h) (gain: 139.00) -20C bin 1x1
Astrodon Lum 31mm Gen2 I-Series: 60x120" (2h) (gain: 139.00) -20C bin 1x1
Astrodon Red 31mm Gen2 I-Series: 30x120" (1h) (gain: 139.00) -20C bin 1x1

Integration: 5h

Avg. Moon age: 25.49 days

Avg. Moon phase: 17.54%


Astrometry.net job: 4192472

RA center: 16h 4' 57"

DEC center: +17° 44' 56"

Pixel scale: 0.283 arcsec/pixel

Orientation: -0.145 degrees

Field radius: 0.222 degrees


Resolution: 4500x3403

Data source: Backyard

Description

This object is the magnificent Hercules Galaxy Cluster, consisting of 200 galaxies located one half billion light years away in the constellation of Hercules at a declination of +18 degrees. The cluster's brightest member is the giant elliptical galaxy NGC 6041, shown at the right center of the image.

Three Arp objects are captured in this tight field of view, in a horizontal row across the center of the image. A fourth Arp object, Arp 172, is just below the bottom of this image. This is the tightest grouping of Arp objects to my knowledge. I captured a wider view of this area in a previously posted image.

Arp 71, consisting of NGC 6045 and PGC 84720, is the wavy edge-on spiral galaxy and companion just left of image center. This galaxy is almost 200,000 light years in diameter and obviously has been disturbed by its companion. Usually the center of galaxy clusters are occupied by large elliptical galaxies. It is unusual to see such a large spiral galaxy at the center of this one.

Arp 272 is the trio of galaxies to the left. This object consists primarily of 2 interacting face-on spirals, NGC 6050 to the left and IC 1179 to the right. NGC 6050 looks yellow while IC 1179 looks blue. There is also a third companion galaxy just above this pair. This small galaxy is not identified in the Astrobin mouseover.

Arp 122 is the similar spiral NGC 6040 to the right, shown with an elliptical companion PGC 56942. The spiral has interesting structure and color.

Two of my favorite parts of this image are not even Arp objects. I love the two edge-on end-to-end spiral galaxies at upper left, PGC 57064. Below this object is the interesting ring galaxy PGC 57073. It has a yellow core, an inner blue region, and a fascinating outer ring.

Although the above galaxies are the highlights for me, there many other cool galaxies scattered throughout this part of the sky.

Comments

Revisions

  • Final
    Arp 272 (Abell 2151), 



    
        

            Gary Imm
    Original
  • Arp 272 (Abell 2151), 



    
        

            Gary Imm
    B

B

Description: Comparison to Original Arp Image

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Arp 272 (Abell 2151), 



    
        

            Gary Imm

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