Hemisphere:  Southern  ·  Contains:  Barnard's galaxy  ·  IC 4895  ·  NGC 6822
NGC 6822 Barnard's Galaxy, 


            Theodore Arampatz...
NGC 6822 Barnard's Galaxy
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NGC 6822 Barnard's Galaxy

Technical card

Imaging telescopes or lenses: William Optics FLT 110

Imaging cameras: SBIG ST-10XME

Mounts: Skywatcher NEQ6 PRO

Guiding telescopes or lenses: William Optics zenithstar 1 80x480

Guiding cameras: Meade DSI C

Software: PixInsight  ·  PHD Guiding  ·  CCDStack  ·  Photoshop  ·  Gradient Xterminator  ·  Software Bisque TheSky6 Pro  ·  Imagenomic Noiseware professional  ·  eqmod  ·  HLGV HLVG  ·  ccdsoft

Filters: Baader Planetarium 1.25" LRGB  ·  Baader ir-cut

Dates:July 3, 2019Aug. 2, 2019Aug. 6, 2019Sept. 8, 2019Sept. 24, 2019

Baader Planetarium 1.25" LRGB: 26x360" -10C bin 1x1
Baader Planetarium 1.25" LRGB: 39x420" -10C bin 1x1
Baader Planetarium 1.25" LRGB: 45x480" -10C bin 1x1

Integration: 13.2 hours

Darks: ~50

Flats: ~25

Bias: ~350

Avg. Moon age: 8.55 days

Avg. Moon phase: 27.53%

Bortle Dark-Sky Scale: 4.00

Mean FWHM: 3.80

Temperature: 25.40

Basic astrometry details

Astrometry.net job: 2944873

RA center: 19h 44' 52"

DEC center: -14° 46' 12"

Pixel scale: 1.819 arcsec/pixel

Orientation: 359.755 degrees

Field radius: 0.593 degrees

Resolution: 1953x1299

Locations: Via Lactea Observatory, Paramithia, Epirus, Greece

Data source: Backyard


NGC 6822 (also known as Barnard's Galaxy, IC 4895, or Caldwell 57) is a barred irregular galaxy approximately 1.6 million light-years away in the constellation Sagittarius. Part of the Local Group of galaxies, it was discovered by E. E. Barnard in 1884. It is one of the closer galaxies to the Milky Way. It is similar in structure and composition to the Small Magellanic Cloud. It is about 7,000 light-years in diameter.The galaxy contains regions of rich star formation and curious nebulae, such as the bubble visible in this image. Astronomers classify NGC 6822 as an irregular dwarf galaxy because of its odd shape and relatively diminutive size by galactic standards. The strange shapes of these cosmic misfits help researchers understand how galaxies interact, evolve and occasionally "cannibalise" each other, leaving behind radiant, star-filled scraps.
At only about a tenth of the Milky Way's size, Barnard’s Galaxy fits contains about 10 million stars — a far cry from the Milky Way’s estimated 400 billion.

Location: Via Lactea Observatory, Kristallopigi Paramithia, Greece

Instruments and exposure data
Sky-Watcher EQ6 Pro Belt Drive Mod
W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
SBIG ST10XME CFW9 Filters: Luminance Red Green Blue (Baader Planetarium)
Lum :23*8min 39*7min 1*10min -10C bin 1x1 total: 7h 47min
Red :21*8min -10C bin 1x1 total: 2h 48min
Green:26*6min -10C bin1x1 total: 2h 36min
Blue :27*5min -10C bin1x1 total: 2h 15min
Darks 50 Bias 350 Flats 25
Meade DSI

Total exposure time:15h 26min 6 nights Jul 3,8 Aug 2,6,24,27



Theodore Arampatz...
License: Attribution-NonCommercial-NoDerivs Creative Commons


  • Final
    NGC 6822 Barnard's Galaxy, 


            Theodore Arampatz...
  • NGC 6822 Barnard's Galaxy, 


            Theodore Arampatz...


Description: A more stretched luminance channel with IFN clearly visible...I suppose

Sky plot

Sky plot


NGC 6822 Barnard's Galaxy, 


            Theodore Arampatz...