View Full Version here: : Ngc6902
markas
26-08-2023, 11:49 AM
This unbarred spiral lies 132Mly away in Sagittarius (lots of stars:(). It is seldom imaged - I now know why - the inner disc is quite bright, but the spiral arms are very faint, and that bright inner disc is only ~1 arcmin and the arms are within about 5.5 arcmin.
This is 10 hours of data - 4L and 2 each R,G,B - and it really needs lots more to dig out the faintest arms. So I guess this is work in progress.
Shot over two nights, seeing OK (1.9") to not so good (2.7").
Mark
TrevorW
26-08-2023, 02:47 PM
Nice capture good colour, always harder to process galaxies IMO :)
strongmanmike
27-08-2023, 01:25 AM
A fabulous galaxy image Mark, love the long "unwinding" thin, almost spindly, Daddy long legs, spiral arms on this one, excellent :thumbsup:
The 1.9" seeing is great, would have helped, nice one.
Mike
markas
28-08-2023, 07:45 AM
Trevor and Mike,
Thanks for the comments. A lot more data would make processing easier, but I'm not holding my breath, given the continuing cloudiness:(. Getting two reasonable nights in a row was a real gift.
Mark
gregbradley
28-08-2023, 08:56 AM
That’s a very pretty galaxy. That turned out very well.
Greg
Dave882
28-08-2023, 05:21 PM
Lovely image well done! I love the central core structure you’ve revealed
markas
29-08-2023, 02:06 PM
Greg and Dave,
Thanks for the comments.
The size and distance of this make it a tricky subject. With the cloudiness, which has gone on for so long, it's hard to find enough good quality dark sky time to do it justice. But it is a very shapely little object!
Mark
petershah
29-08-2023, 05:42 PM
Thats stunning Mark....beautiful process
markas
30-08-2023, 08:23 AM
Thanks Peter,
It was a bit tough!
Mark
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