Hemisphere:  Northern  ·  Constellation: Virgo (Vir)  ·  Contains:  NGC 4639  ·  NGC 4654  ·  NGC4639  ·  NGC4654
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NGC 4639 and NGC 4654, 



    
        

            Gary Imm
NGC 4639 and NGC 4654, 



    
        

            Gary Imm

NGC 4639 and NGC 4654

Getting plate-solving status, please wait...
NGC 4639 and NGC 4654, 



    
        

            Gary Imm
NGC 4639 and NGC 4654, 



    
        

            Gary Imm

NGC 4639 and NGC 4654

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: Adobe Inc Lightroom Classic  ·  Main Sequence Software Sequence Generator Pro  ·  Pleaides Astrophoto PinInsight 1.8  ·  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  ·  Chroma Luminance 2" unmounted

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


Dates:March 10, 2021March 11, 2021

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

Integration: 5.0 hours

Avg. Moon age: 27.19 days

Avg. Moon phase: 6.31%


Astrometry.net job: 4392854

RA center: 12h 43' 25"

DEC center: +13° 11' 47"

Pixel scale: 0.775 arcsec/pixel

Orientation: -2.819 degrees

Field radius: 0.340 degrees


Resolution: 2542x1870

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

Data source: Backyard

Description

This image captures a pair of galaxies located in the constellation of Virgo at a declination of +13 degrees. These two galaxies are too far apart to be interacting.

NGC 4639 is the galaxy at upper right. It is a magnitude 12.7 barred spiral galaxy located 80 million light years away. It spans 2.6 arc-minutes in our apparent view, which corresponds to a diameter of 65,000 light years. Ansae are visible at the end of each bar.

NGC 4654 is the galaxy at lower left. It is a magnitude 10.5 spiral galaxy located 45 million light years away. It spans 2.4 arc-minutes in our apparent view, which corresponds to a diameter of 70,000 light years. The galaxy structure appears to contain straight segmented Vorontsov-Velyaminov row sections. Numerous star clusters and HII regions are visible in the disk.

Comments

Revisions

  • Final
    NGC 4639 and NGC 4654, 



    
        

            Gary Imm
    Original
  • NGC 4639 and NGC 4654, 



    
        

            Gary Imm
    C

C

Description: Annotation

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Histogram

NGC 4639 and NGC 4654, 



    
        

            Gary Imm