ESO 305-9 (AKA PGC 16790) is a fairly large galaxy in the Columba group that includes NGC 1792 and NGC 1808. I guess it's not bright enough to have gained a NGC designation. Having previously imaged NGC 1792 and NGC 1808 I thought I would have a go at this one. All three are pretty close together and a mosaic may be feasible with a shorter focal length.
Good time for some less traveled galaxies this time of year Steve. This one has an irregular spiral nature about it, interesting target, thanks for the looksee.
Hope you don't mind but I processed your image to extract some more details out of the galaxy by using a mathematical function I came up with a while back.
With raw images I think the result would be more dramatic.
Hope you don't mind but I processed your image to extract some more details out of the galaxy by using a mathematical function I came up with a while back.
With raw images I think the result would be more dramatic.
The before and after are attached.
Regards
Steven
Thanks Steven. Your new function seems to have made some difference all right. I played around with HDR a bit which can yield similar results but you have to be careful not to overdo it.
Quote:
Originally Posted by RickS
Very cool, Steve! A surface brightness of 23.8 mag/arcsec^2 according to one source. Quite a challenging target
Cheers,
Rick.
Thanks Rick. The STXL6303 seems to be good at this sort of thing
Quote:
Originally Posted by strongmanmike
Good time for some less traveled galaxies this time of year Steve. This one has an irregular spiral nature about it, interesting target, thanks for the looksee.
Mike
Thanks Mike. Might have an ESO open cluster coming up next if the weather holds.
Nice one Steve, good result with what looks like not a lot of exposure time. Stevens tweak is even better. And yes, I think the STXL6303 is pretty good at dim stuff too.
Nice one Steve, good result with what looks like not a lot of exposure time. Stevens tweak is even better. And yes, I think the STXL6303 is pretty good at dim stuff too.
Thanks Fred. Actually I thought 8 hours of luminance was a fair bit of exposure time but I suppose it's not much by your standards. I've tweaked it a bit - not sure if it's an improvement.
Thanks Fred. Actually I thought 8 hours of luminance was a fair bit of exposure time but I suppose it's not much by your standards. I've tweaked it a bit - not sure if it's an improvement.
Actually, I now bothered to divide 480 by 60, OK, 8 hrs is a lot for lum, shows how dim it is. Im still thinking Stevens tweak is better, but yours now is close enough.
Just to clarify... I love the image and the fact that you walk the path less travelled.
Reminds me of a piece by one of Australia's greatest treasures (see attached)
....and I'm no doubt showing my age by recalling Michael's superb social commentary at the time.
Actually, I now bothered to divide 480 by 60, OK, 8 hrs is a lot for lum, shows how dim it is. Im still thinking Stevens tweak is better, but yours now is close enough.
Thanks. Steven's method appears to show promise.
Quote:
Originally Posted by gregbradley
A new road being travelled there Steve.
Greg.
Someone has to travel it I guess. It certainly vastly increases the number of things available to photograph.
Quote:
Originally Posted by clive milne
Just to clarify... I love the image and the fact that you walk the path less travelled.
Thanks Clive
Quote:
Originally Posted by Peter Ward
Reminds me of a piece by one of Australia's greatest treasures (see attached)
....and I'm no doubt showing my age by recalling Michael's superb social commentary at the time.
A particularly good Leunig cartoon. Does that mean you like the image too? Of course it's not as showy as some of the great images of common objects that get posted here.
A particularly good Leunig cartoon. Does that mean you like the image too? Of course it's not as showy as some of the great images of common objects that get posted here.
Not mainstream and likely under-appreciated, but I do indeed like it.
