Hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  NGC 3664  ·  NGC3664
Getting plate-solving status, please wait...
Arp 5, 



    
        

            Gary Imm
Arp 5, 



    
        

            Gary Imm

Arp 5

Getting plate-solving status, please wait...
Arp 5, 



    
        

            Gary Imm
Arp 5, 



    
        

            Gary Imm

Arp 5

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


Dates:March 4, 2021March 5, 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: 21.00 days

Avg. Moon phase: 62.06%


Astrometry.net job: 4352692

RA center: 11h 24' 25"

DEC center: +3° 19' 26"

Pixel scale: 0.343 arcsec/pixel

Orientation: -0.261 degrees

Field radius: 0.187 degrees


Resolution: 3082x2426

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

Data source: Backyard

Description

This Astrobin Debut Object is a spiral galaxy located 90 million light years away in the constellation of Leo at a declination of +3 degrees. This magnitude 13.2 galaxy, also known as NGC 3664, spans 2 arc-minutes in our apparent view, which corresponds to a diameter of 45,000 light years. This galaxy was classified by Dr. Arp into the category of Spiral Galaxies with Low Surface Brightness.

This galaxy is really messed up. The barred white core is off center to the right side. The arms are distorted beyond recognition. Star formation is occurring in the outer disk, particularly in the lower right portion. Something has interacted with this galaxy to cause this sever disturbance.

The faint galaxy at the bottom of the image, UGC 6418, is about the same distance away as Arp 5 and could be the cause of the disturbance. This small magnitude 15 dwarf galaxy also has a messy disk structure.

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