Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Barnard's galaxy  ·  IC 4895  ·  NGC 6822
Getting plate-solving status, please wait...
NGC 6822 - Barnard's Galaxy, 



    
        

            Gary Imm
NGC 6822 - Barnard's Galaxy, 



    
        

            Gary Imm

NGC 6822 - Barnard's Galaxy

Getting plate-solving status, please wait...
NGC 6822 - Barnard's Galaxy, 



    
        

            Gary Imm
NGC 6822 - Barnard's Galaxy, 



    
        

            Gary Imm

NGC 6822 - Barnard's Galaxy

Acquisition details

Dates:
Aug. 17, 2017
Frames:
Astrodon Gen2 I-Series Tru-Balance Blue: 30×60(30′) (gain: 139.00) -10°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Green: 30×60(30′) (gain: 139.00) -10°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Lum: 40×60(40′) (gain: 139.00) -10°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Red: 30×60(30′) (gain: 139.00) -10°C bin 1×1
Integration:
2h 10′
Avg. Moon age:
24.81 days
Avg. Moon phase:
23.20%

RA center: 19h44m56s.608

DEC center: -14°4716.74

Pixel scale: 0.850 arcsec/pixel

Orientation: 88.833 degrees

Field radius: 0.433 degrees

More info:Open 

Resolution: 3200x1800

File size: 3.6 MB

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

Data source: Backyard

Description

Some sky objects are imaged for their fantastic colors and shapes, and others are imaged because they are simply unique or interesting objects. Barnard's Galaxy, discovered by Dr. Barnard in 1881, falls into the latter category. This object is classified as an irregular dwarf galaxy because of its odd shape and is relatively small by galactic standards. The galaxy contains a mere 10 million stars - a very small number compared to our Milky Way Galaxy's estimated 400 billion stars. Interestingly, dwarf galaxies outnumber large ones in our universe. They get their random, blob-like forms from close encounters with other galaxies, when gravity's attraction can dramatically warp and scramble their shape.

This is one of the few galaxies outside of ours where we are image to image globular clusters.  I have indicated three of them - Hubble VII, SC 3 and SC6 - on the mouseover.

Comments

Revisions

  • Final
    NGC 6822 - Barnard's Galaxy, 



    
        

            Gary Imm
    Original
  • NGC 6822 - Barnard's Galaxy, 



    
        

            Gary Imm
    B

B

Description: Mouseover showing globular clusters

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 6822 - Barnard's Galaxy, 



    
        

            Gary Imm