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| Object | NGC 6822 |
| Info |
NGC 6822 is located in the constellation of Sagittarius. It's popular name is Barnard's Galaxy, it is classified as a dwarf galaxy and is an irregular member of the local group of galaxies. It's surface brightness is very dim, rated at around 14.8 mag/sq arc min. The galaxy contains a number of Hll/ emission nebula. It lies approximately 1.5 million ly. away . |
| Date | 4:5:6/ 7/ 05 |
| Location | BayTop Observatory- Streaky Bay South Australia |
| Instrument | Orion ED80 refractor working @ f7.5 |
| Mount | Vixen 'GPDX' controlled by a Mel Bartels Goto System |
| Camera (CCD) | Starlight Xpress HX516 monochrome with Hm, made filter slider |
| Exposures | L: 168' R:84' G:84' B:84'[(Total exposure time Lrgb=7hrs) 6' sub exposures all unbinned] Dark frames removed. Extinction factors applied . |
| Guiding | Sky Watcher-f5 ST Refractor & a Meade LPI imager attached with main scope on a home made accessory plate |
| Filters | Astronomik Type 2 CL-.RGB set |
| Notes/ Conditions |
Conditions- The evenings improved from the 4th up to the 6th, the latter being the best night. I gathered as many rgb's as I could as the colours were very faint and hard to record. as was the whole object. Both the rgb sets and lum have been 'drizzle combined' coefficient resampled to 120% in IRIS. |