Hemisphere:  Northern  ·  Constellation: Sextans (Sex)  ·  Contains:  IC 561  ·  IC 563  ·  IC 564  ·  IC561  ·  IC563  ·  IC564
Getting plate-solving status, please wait...
Arp 303, 



    
        

            Gary Imm
Arp 303, 



    
        

            Gary Imm

Arp 303

Getting plate-solving status, please wait...
Arp 303, 



    
        

            Gary Imm
Arp 303, 



    
        

            Gary Imm

Arp 303

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: 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: 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 22, 2021March 23, 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: 8.69 days

Avg. Moon phase: 63.65%


Astrometry.net job: 4410974

RA center: 9h 46' 20"

DEC center: +3° 3' 30"

Pixel scale: 0.343 arcsec/pixel

Orientation: -0.298 degrees

Field radius: 0.187 degrees


Resolution: 3240x2206

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

Data source: Backyard

Description

This Astrobin Debut Object is a pair of galaxies located 280 million light years away in the constellation of Sextans at a declination of +3 degrees. This galaxy was classified by Dr. Arp into the category of Double Galaxies. Both galaxies show significant disturbance.

The bottom galaxy is IC 563. This magnitude 15 galaxy is 90,000 light years in diameter. The arms of this smaller galaxy appear to be twisted around like a pretzel, and a dark dust area appears above the core.

The top galaxy is IC 564. This magnitude 14 galaxy is much larger at 160,000 light years in diameter. An interesting star cloud is seen to the right of the core.

Two other interesting galaxies are seen in this image. The faint galaxy at lower right is UGC 5224. This galaxy is much closer at 90 million light years away and is 50,000 light years in diameter. The structure is hard to see but it appears to be a barred spiral ring galaxy, with strong ansae at each end of the bar. Several “companion” galaxies are seen to the left, but these are larger distant galaxies and not true companions.

At upper right is IC 561. This spiral ring galaxy is a similar distance as Arp 303, at 270 million light years away, and is also about 50,000 light years in diameter.

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