Hemisphere:  Southern  ·  Constellation: Hydra (Hya)  ·  Contains:  NGC 2881  ·  NGC2881
Getting plate-solving status, please wait...
Arp 275, 



    
        

            Gary Imm
Arp 275, 



    
        

            Gary Imm

Arp 275

Getting plate-solving status, please wait...
Arp 275, 



    
        

            Gary Imm
Arp 275, 



    
        

            Gary Imm

Arp 275

Imaging telescopes or lenses: Celestron EdgeHD 11

Imaging cameras: ZWO ASI 294 MM Pro

Mounts: Astro-Physics Mach1GTO

Guiding cameras: ZWO ASI 174 MM Mini

Software: Adobe Inc Lightroom Classic  ·  Pleaides Astrophoto PinInsight 1.8  ·  Main Sequence Software Sequence Generator Pro  ·  Adobe Inc Adobe Photoshop CC 2021  ·  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  ·  ZWO EFW 2″X7  ·  MoonLite Focuser for EdgeHD 11


Dates:Feb. 23, 2021Feb. 24, 2021

Frames:
Astrodon Blue 31mm Gen2 I-Series: 30x120" (1h) (gain: 120.00) -20C bin 2x2
Astrodon Green 31mm Gen2 I-Series: 30x120" (1h) (gain: 120.00) -20C bin 2x2
Astrodon Lum 31mm Gen2 I-Series: 60x120" (2h) (gain: 120.00) -20C bin 2x2
Astrodon Red 31mm Gen2 I-Series: 30x120" (1h) (gain: 120.00) -20C bin 2x2

Integration: 5h

Avg. Moon age: 11.30 days

Avg. Moon phase: 86.79%


Astrometry.net job: 4382454

RA center: 9h 25' 54"

DEC center: -11° 59' 41"

Pixel scale: 0.343 arcsec/pixel

Orientation: -0.343 degrees

Field radius: 0.147 degrees


Resolution: 2414x1935

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

Data source: Backyard

Description

This Astrobin Debut Object, also known as NGC 2881, is a pair of galaxies located 240 million light years away in the constellation of Hydra at a declination of -12 degrees. Each galaxy spans about 45 arc-seconds in our apparent view, which corresponds to a diameter of 50,000 light years. This magnitude 14 object was classified by Dr. Arp into the category of Double Galaxies – Interacting.

These galaxies are so small and distant that it is hard to see what is happening here. I think they are interacting, because of my perception of some disturbance, star streams, and star formation, but they could simply be superimposed as well. Dr. Arp did not add any notes to this entry to explain his placement of this object into the “Double Galaxies – Interacting” category vs. simply his “Double Galaxies” category, which is where I would have placed it.

Comments