NGC 6822 or Barnards Galaxy, is a dwarf galaxy in Sagittarius about 1.6 million light years away and about 7000 light years in diameter. It has plenty of HII and a few OIII emission nebulae regions and to me it resembles a mini LMC. The galaxy sits in a pretty dusty region of the sky not far from the main band of the Milky Way, with lots of intervening galactic cirrus dust, which covers the field.
It was nice and clear for most of the two nights with little or no Moon and I enjoyed above average seeing when collecting the Ha and OIII but sadly, it fell well below average for the Lum and was pretty poor for the RGB ...so I did some tricky blending to use the NB data to boost the details a little but I used no decon or deliberate sharpening in the processing.
That's magnificent. The excellent optics and good seeing for the H-alpha data produced crispy crunchy clear super-bubbles, even without decon or sharpening.
And what a fascinating object it is too. I agree that it looks like a mini version of the LMC and the red globules complete the picture. Good one.
Thanks Rod
Quote:
Originally Posted by Placidus
That's magnificent. The excellent optics and good seeing for the H-alpha data produced crispy crunchy clear super-bubbles, even without decon or sharpening.
Cheers Mike, ah well as you know all too well, we take what conditions we get, some you win some you lose
Quote:
Originally Posted by atalas
Nice shot Mike.
Thnaks Louie
Quote:
Originally Posted by troypiggo
Amazing to see that level of Ha detail in other galaxies other than pink dots. Nice!
I agree Troy, seeing details in other galaxies always feels awesome, the super bubble here is so cool
I tried this about a year ago with a 5" and quite scant data... Yours has really done it justice! There is a lot of dust in the background which shows up nicely in luminance
Thanks Mark, it's a little boring without'em, so I thought a bit of Ha and OIII would lift'em
Quote:
Originally Posted by gregbradley
That's a terrific image Mike. A rarely imaged object and done very deeply.
Some of those Ha blobs look like LMC blobs.
Greg.
Cheers Greg, yes it really does look like a mini LMC
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Originally Posted by Retrograde
Looks fabulous Mike!
Thanks Pete
Quote:
Originally Posted by RickS
Another great result, Mikey Looks very much like the mini-me version of the LMC
Thanks Rick, yep, I agree
Quote:
Originally Posted by Atmos
I tried this about a year ago with a 5" and quite scant data... Yours has really done it justice! There is a lot of dust in the background which shows up nicely in luminance
On ya Col but with NGC 6822 sitting at 1.6 million light years, the dust is definitely in the foreground
Quote:
Originally Posted by alpal
Hi Mike,
that's an amazing result for such a dim target -
especially the Ha areas popping so well.
Shame about your seeing but a compelling result nonetheless for this underrated object. Vibrant colour and the HII shows up nicely. I'll have to finish my version one day!!
Shame about your seeing but a compelling result nonetheless for this underrated object. Vibrant colour and the HII shows up nicely. I'll have to finish my version one day!!
Cheers 99 Acres Marcus (is that like Bradman's 99.94 batting average...ie it will always not quite be 100?)
Actually, if I were patient I would have waited and grabbed some different and more Lum when the seeing is better...may still do this yet, as I think it could be deeper (3hrs isn't much) and there is more resolution into stars possible within the galaxy...?
Mike
Last edited by strongmanmike; 29-08-2017 at 03:02 PM.
Well done Mike!!
I have always found this object to be very difficult to capture well. You obviously haven't had too hard a time getting it done - very nice!!
Cheers,
Tim
Well done Mike!!
I have always found this object to be very difficult to capture well. You obviously haven't had too hard a time getting it done - very nice!!
Cheers,
Tim
Thanks Tim, because the seeing was good during their capture the HII features are reasonably detailed but if my setup was a little more automated I would likely collect some more and better Lum as I recon there is some stella resolution missing due to the much poorer seeing while capturing the Lum......thing is I get bored pretty easily
...so I did some tricky blending to use the NB data to boost the details a little but I used no decon or deliberate sharpening in the processing.
I would have waited and grabbed some different and more Lum when the seeing is better...may still do this yet, as I think it could be deeper (3hrs isn't much) and there is more resolution into stars possible within the galaxy...?
...thing is I get bored pretty easily 
