NGC 6822, The Sagittarius Dwarf Galaxy
An irregular galaxy and member of our Local Group, NGC 6822 lies roughly 1.6Mly away and close to the plane of the Milky Way. It was discovered visually in 1884 by E. E. Barnard using a 5" refractor and has a strong resemblance to the Magellanic Clouds, both visually and structurally. Like these it contains a similar stellar population of hot young giant stars (brightest at around 15th magnitude) and numerous star-forming regions glowing red (several are visible in the image). The field also contains faint wispy nebulosity which is cosmic "cirrus" of our own Milky Way galaxy.
|Camera:||SBIG STL11000M, Astrodon filters||Scope:||Takahashi TOA-130, f=1000mm, f7.7 (fov ~2.1°x1.4°)|
|Mount:||Takahashi EM-200 Temma2||Guiding:||external (E-finder)|
|Filters/Exposures:||L:R:G:B = 80:40:40:40min ≡ 3h20m||Location:||LMDSS, Heathcote, Victoria|
|Date:||September 2014||Processing:||CCDStack2, RegiStar and Photoshop CS5|