Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  IC 2943  ·  NGC 3733  ·  NGC 3737  ·  NGC 3738  ·  NGC 3756  ·  NGC 3759
Getting plate-solving status, please wait...
Arp 234, 



    
        

            Gary Imm
Arp 234, 



    
        

            Gary Imm

Arp 234

Getting plate-solving status, please wait...
Arp 234, 



    
        

            Gary Imm
Arp 234, 



    
        

            Gary Imm

Arp 234

Imaging telescopes or lenses: Takahashi TOA-130NFB

Imaging cameras: ZWO ASI 6200 MM Pro

Mounts: Astro-Physics Mach1GTO

Guiding cameras: ZWO ASI 174 MM Mini

Software: Pleaides Astrophoto PinInsight 1.8  ·  Adobe Inc Lightroom Classic  ·  Main Sequence Software Sequence Generator Pro  ·  Adobe Inc Adobe Photoshop CC 2021  ·  Stark Labs PHD2 2.6.3

Filters: Chroma Red 2" unmounted  ·  Chroma Blue 2" unmounted  ·  Chroma Green 2" unmounted

Accessory: Feathertouch Focuser Boss II Electronic Focusing Control  ·  ZWO M68 OAG  ·  ZWO EFW 2″X7  ·  Takahashi Flattener TOA-67


Dates:March 13, 2021March 14, 2021

Frames:
Chroma Blue 2" unmounted: 30x120" (1h) (gain: 0.00) -20C bin 1x1
Chroma Green 2" unmounted: 30x120" (1h) (gain: 0.00) -20C bin 1x1
Chroma Luminance 2" unmounted: 60x120" (2h) (gain: 0.00) -20C bin 1x1
Chroma Red 2" unmounted: 30x120" (1h) (gain: 0.00) -20C bin 1x1

Integration: 5h

Avg. Moon age: 0.53 days

Avg. Moon phase: 0.57%


RA center: 11h35m51s.270

DEC center: +54°4008.83

Pixel scale: 0.774 arcsec/pixel

Orientation: 1.614 degrees

Field radius: 0.909 degrees

More info:Open 


Resolution: 6640x5244

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

Data source: Backyard

Description

This object, also known as NGC 3738, is an irregular dwarf galaxy located only 17 million light years away in the constellation of Ursa Major at a declination of +55 degrees. This magnitude 12 galaxy spans 1 arc-minute in our apparent view, which corresponds to a small diameter of 5000 light years. This galaxy was classified by Dr. Arp into the category of Galaxies with Appearance of Fission.

The galaxy is so close to us that we can easily see star clusters in the central area. I framed the object so that several other interesting galaxies are seen nearby, specifically NGC 3733 above and NGC 3756 below. These galaxies are much further away than Arp 234.

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