View Full Version here: : Grus trio
Paul Haese
24-09-2012, 11:58 PM
Been testing my GSO RC12 with a set of faint fuzzies. Despite guiding issues ( I need to use the MOAG) with stars being not quite right I think this image looks ok. Not a lot of integration time, but given the star shapes I am inclined to resolve the guiding first.
Lots of faint little galaxies abide in the field, but the three main players are the real attraction. Each one has its own distinctive look.
Click here (http://paulhaese.net/NGC7590GrusTriplet.html)for image.
Feel free to critique.
desler
25-09-2012, 12:12 AM
Very nice on my phone Paul!
Darren
RickS
25-09-2012, 10:27 AM
A great result, Paul, especially if your guiding wasn't behaving.
strongmanmike
25-09-2012, 10:39 AM
Looks good to me Paul, yeh slightly wonky stars but still a good result :thumbsup:, more exposure won't do much here I don't think as there isn't anything else there really and they are bright galaxies :shrug:
Mike
Rigel003
25-09-2012, 01:04 PM
You have been so busy Paul. New scopes and cameras galore - solar, deep sky, you name it. This looks promising. Once you get the guiding sorted I'd love to see you use that bigger plate scale on some more substantial galaxies like NGC 253 or 300. Looking forward to more.
marc4darkskies
25-09-2012, 01:10 PM
Nice image Paul! Shame about your guiding issues though. Why don't you process out the elongation - it's all in one direction so should be easy?
Cheers, Marcus
pvelez
25-09-2012, 01:55 PM
Paul
thats a great set of galaxies
Pete
Larryp
25-09-2012, 01:56 PM
Very nice!
David Fitz-Henr
25-09-2012, 03:17 PM
Considering you had guiding issues this is still a great image, quite deep too looking at all the faint galaxies in the field!
atalas
25-09-2012, 05:12 PM
Nice shot Paul.
Peter.M
25-09-2012, 05:19 PM
so many galaxies!
tilbrook@rbe.ne
25-09-2012, 05:35 PM
Hi Paul,
Very nice!
Great to see what these galaxies look like with the resolution of the GSO RC12.
Cheers,
Justin.
Leonardo70
25-09-2012, 05:59 PM
Seems to promise very well the GSO RC12".
Very nice.
All the best,
Leo
Paul Haese
25-09-2012, 06:11 PM
Thanks guys for the thoughts.
Marcus how do I process out the elongation? Always good to learn new tricks.
Graeme, lots to do but so little time to do it in.
allan gould
25-09-2012, 06:33 PM
Colours are nice but it appears that you have burnt out the smaller galaxy center (compared to this taked with a 10" GSO RC http://www.iceinspace.com.au/forum/attachment_browse.php?a=122264) I guess it's all in the processing but it's nice to see you finally using the 12"
Allan
marco
25-09-2012, 07:02 PM
Very nice Paul, a slightly problem of tracking perhaps (not so evident to me), with longer exposures I am sure this will be a corker!
Clear skies
Marco
Martin Pugh
25-09-2012, 09:28 PM
Hi Paul
the colour in the galaxies looks good, but as you say, you have to sort out the guiding.
Processing out the elongation in the stars is somewhat irrelevant because if your stars are elongated, so is the detail in the galaxies, and it is the latter which is the object of the image in my mind....its a bit like keeping really bad frames in an otherwise good data set.
cheers
Martin
marc4darkskies
25-09-2012, 10:47 PM
Martin is right, there is no way to recover the lost detail in the subject, but you can mitigate the distraction of elongated stars quite easily if the elongation is minor as it is in your case.
This is a common method:
http://bf-astro.com/starRepair.htm
Cheers, Marcus
Shiraz
26-09-2012, 11:44 AM
hi Paul - very nice image.
Try deconvolution in IRIS with an actual PSF as the kernel to tidy up the stars - will also restore some detail in the galaxies, but care needed with saturated star cores. the examples given in the link are hideous, but good enough to get across the idea.
http://www.astrosurf.com/buil/iris/tutorial12/doc30_us.htm
Failing that, Startools does a nice job on cosmetics, but generally needs some manual mask editing to ensure that only isolated stars are adjusted.
regards ray.
gregbradley
26-09-2012, 01:23 PM
You're off to a very promising start Paul.
Tough audience, not so long ago images with stars like that would've been OK!
Greg.
Agree 100%. I think it looks great as-is.
James
bokglob
26-09-2012, 07:09 PM
Nice shot Paul, colour is spot-on :thumbsup: Minor guiding issues I'm sure you'll sort and no doubt do this again sometime, but as is, still a fine effort!
This seems to be a hard target to process as the galaxies have varied luminence, so it's hard to get all the cores even in one go. Trial and error.
Ross G
28-09-2012, 10:13 PM
So many galaxies.
A great looking photo Paul.
Ross.
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