NGC 6822 - Barnard's Galaxy
NGC 6822 - Barnard's Galaxy |
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Object data of NGC6822 |
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| Object type: | galaxy (dwarf Irr) | |
| Size: | 15.4' x 14.2' | |
| Magnitude: | 9.3 mag | |
| Constellation: | Sgr | |
| Distance: | 1.6 MLy | |
| Notes: |
NGC 6822 was discovered by E.E. Barnard in 1884. This irregular dwarf
galaxy is a member of the Local Group.
There is much dust in this region of the sky, as can be seen clearly in the inverted image. The dust is a part of our milky way. Because we are looking through this dust at Barnard's Galaxy, the colour of NGC6822 is more reddish than it would have been without dust: E(B-V)=0.24 mag. Many HII regions can be found in the above image. The object identification shows the following HII regions, discovered by Hubble in 1925: HI, HII, HIII, HV and HX. Also, some HII regions, which were discovered by Hodge in 1969 are visible: Ho5, Ho8 and Ho15. |
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Exposure data |
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| Date: | 2009-09-14 + 15 + 16 + 17 | |
| Location: | La Palma / Spain (1700m) | |
| Telescope: | TeleVue NP101 (4" Apo f=540mm) | |
| Camera: | ST2000XM with CFW8 and Baader Filters | |
| Binning: | L 1x1 / RGB 1x1 | |
| Exposure time: | L 20x12m / R 4x12m / G 4x12m / B 4x12m | |
| Exposure time total: | 6h 24m | |
| Notes: | ||
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