Hemisphere:  Northern  ·  Constellation: Camelopardalis (Cam)  ·  Contains:  NGC 1961  ·  PGC17659
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Arp 184, 



    
        

            Gary Imm
Arp 184, 



    
        

            Gary Imm

Arp 184

Getting plate-solving status, please wait...
Arp 184, 



    
        

            Gary Imm
Arp 184, 



    
        

            Gary Imm

Arp 184

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  ·  Pixinsight  ·  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: ZWO EFW 2″X7  ·  Celestron OAG  ·  MoonLite Focuser for EdgeHD 11


Dates:Dec. 15, 2020Dec. 16, 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: 1.46 days

Avg. Moon phase: 2.72%


RA center: 05h42m05s.606

DEC center: +69°2233.90

Pixel scale: 0.281 arcsec/pixel

Orientation: -3.558 degrees

Field radius: 0.199 degrees

More info:Open 


Resolution: 3978x3189

Locations: Backyard (Mag 20.8 - Bortle 4.5), Onalaska, Texas, United States

Data source: Backyard

Description

This object, also known as NGC 1961, is a spiral galaxy located 200 million light years away in the constellation of Camelopardalis at a declination of +69 degrees. This magnitude 11 galaxy spans 3.7 arc-minutes in our apparent view, which corresponds to a diameter of 210,000 light years. It was classified by Dr. Arp into the category Galaxies – Narrow Filaments. The “filaments” are the narrow straight arms extending up and to the right out of the top side of the galaxy.

I love the chaotic disk structure of this galaxy. A yellow bright tight off-center core is surrounded by a dust cloud vortex. Dark dust lanes are visible below the core. Numerous HII regions and star clusters seen towards the left and bottom edges of the disk.

The disturbance seen in this galaxy could have been caused by the galaxy at top left (2MASX J05432302+6925516), which is about the same distance away from us.

Comments

Revisions

  • Arp 184, 



    
        

            Gary Imm
    Original
  • Arp 184, 



    
        

            Gary Imm
    F

F

Description: Comparison to Original Arp Image

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Arp 184, 



    
        

            Gary Imm