Hemisphere:  Northern  ·  Constellation: Andromeda (And)
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Region of Arp 145 (peculiar galaxy south of NGC 891), 



    
        

            gigiastro
Region of Arp 145 (peculiar galaxy south of NGC 891)
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Region of Arp 145 (peculiar galaxy south of NGC 891)

Getting plate-solving status, please wait...
Region of Arp 145 (peculiar galaxy south of NGC 891), 



    
        

            gigiastro
Region of Arp 145 (peculiar galaxy south of NGC 891)
Powered byPixInsight

Region of Arp 145 (peculiar galaxy south of NGC 891)

Technical card

Imaging telescopes or lenses: Canon EF 400mm f/5,6L USM

Imaging cameras: Canon EOS 60Da

Mounts: iOptron ZEQ25GT

Software: PixInsight  ·  Noel Carboni's AstroFlat Pro  ·  Elements Photoshop


Dates:Oct. 27, 2019

Frames: 464x30" (3h 52') ISO1600

Integration: 3h 52'

Darks: 10

Flats: 40

Flat darks: 20

Bias: 80

Avg. Moon age: 28.78 days

Avg. Moon phase: 0.63%

Bortle Dark-Sky Scale: 7.00

Temperature: 13.00


Basic astrometry details

Astrometry.net job: 3069320

RA center: 02h23m08s.9

DEC center: +41°2251

Pixel scale: 0.847 arcsec/pixel

Orientation: 358.699 degrees

Field radius: 0.259 degrees


Resolution: 1920x1080

Locations: Home, Mestre, Venezia, Italy

Data source: Backyard

Description

Arp 145 - UGC 1840 - Ring galaxy system

The donut image is real, it is not an artifact produced by the nearby bright star!

"Ring galaxy system...which are created when one galaxy passes through

the disk of another...The interaction would produce a wave effect that would

first draw matter into the center and then cause it to propagate outward in a ring."

(From Wikipedia, Atlas of Peculiar Galaxies (a catalog of peculiar galaxies produced by Halton Arp))

Cropping from original picture of 5202x3465 resolution

Comments

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  • Final
    Region of Arp 145 (peculiar galaxy south of NGC 891), 



    
        

            gigiastro
    Original
  • Region of Arp 145 (peculiar galaxy south of NGC 891), 



    
        

            gigiastro
    B

B

Description: Drizzle x2 integration

Uploaded: ...

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Region of Arp 145 (peculiar galaxy south of NGC 891), 



    
        

            gigiastro