View Full Version here: : Ngc1365
Shiraz
28-11-2015, 04:20 PM
Hi
only got parts of a couple of clear nights for this, but the skies were pretty transparent, so that helped. Used bin2x2 for the colour, to fit into the short available time - seemed to work OK.
It is a really pretty object but there is a wide variety of approaches to the colour on the web - ended up just letting PI do it's thing.
http://astrob.in/228958/0/
full size: http://www.astrobin.com/full/228958/0/?real=&mod=
thanks for looking. Regards ray
RickS
28-11-2015, 05:23 PM
Looks like PI did it's thing well, Ray! Love the colour and detail.
Cheers,
Rick.
Somnium
28-11-2015, 05:48 PM
wow, really nice image ray, the 2x2 doesn't seem to have impact the quality at all. great stuff
glenc
28-11-2015, 06:04 PM
Magnificent :thumbsup:
multiweb
28-11-2015, 06:27 PM
That looks cool Ray. Up to your sublime usual standard. :thumbsup: You make it look too easy mate.
Slawomir
28-11-2015, 06:32 PM
This is seriously good image, well done Ray :thumbsup:
codemonkey
28-11-2015, 06:37 PM
Great work, Ray! Love this galaxy, it's been on my to-do list for a while now, and you've done a great job.
topheart
28-11-2015, 06:38 PM
Awesome job again Ray !!
Cheers,
Tim
batema
28-11-2015, 06:50 PM
Beautiful image. Great detail.
Mark
Placidus
28-11-2015, 06:53 PM
Everything about that shot is beautiful. Flawless colour. Sharp detail right into the core. Several clean super-faint distant galaxies. Most enjoyable viewing.
Best,
Mike and Trish
Atmos
28-11-2015, 07:53 PM
That's a great shot there Ray! It is on my current list of no moon galaxies, you've given me something to strive for :-)
marc4darkskies
28-11-2015, 09:55 PM
Very nice work Ray :thumbsup: This is one of my favorite galaxies! With the right field of view and processing (like yours) it's a jewel floating on a sea of background galaxies. Lovely!
Regulus
28-11-2015, 10:02 PM
Just repeating what everyone else has said in case you didn't get the message - beautiful image Ray.
Shiraz
28-11-2015, 10:42 PM
thanks Rick - relying on PI more and more these days :)
Thanks Aidan - the binning worked out better than expected, but the seeing was pretty good. Previously I have tried to bin the colour in crap seeing and it hasn't worked so well.
many thanks Glen.
thanks Marc. appreciated
thank you very much Slawomir.
Thanks lee. I hadn't imaged it before either - it's a pretty galaxy.
thanks a lot Tim.
thanks very much Mark
Thanks M&T. Very glad you found it enjoyable - makes posting worthwhile.
Go for it Colin - looking forward to your image.
Thanks Marcus. That's a neat way to describe it - it is a very jewel-like galaxy. It would probably be more lustrous looking with more data, but this was as much as I could get.
thanks very much Trevor
regards Ray
Fabiomax
28-11-2015, 10:46 PM
Beautiful details, colours and deep ! Great image,
Cheers,
Fabiomax
Shiraz
28-11-2015, 11:13 PM
thank you Fabio. Don't think that there is anything here that is as far away as your QSO at Z=2.81 though:)
beautiful image. Faint fuzzies everywhere. But the main object is really well done. Top Job:thumbsup:
rmuhlack
28-11-2015, 11:49 PM
Superb!
Nico13
29-11-2015, 12:18 AM
Very Very nice image there Ray, :thumbsup: I'm going to have to try harder :lol:
Amaranthus
29-11-2015, 10:32 AM
Lovely work Ray! I have the same scope, and the same sensor (on a QHY) - something to which I can aspire in the future!
Ryderscope
29-11-2015, 11:33 AM
Great detail, great colour and excellent PI processing.
Definitely a winner :thumbsup:
Paul Haese
29-11-2015, 06:01 PM
Very nice work Ray. Great colour and detail is crisp too.
gregbradley
29-11-2015, 06:20 PM
A fabulous image with great colour and detail but on my monitor there is some weird mottled background blue artifacts like the blue channel has been pushed too hard. My laptop monitor tends to run a bit bluish as well.
Greg.
alpal
29-11-2015, 08:04 PM
That's perfect Ray,
you encourage me to get out there with my 10" f4 Newt.
cheers
Allan
Shiraz
29-11-2015, 09:27 PM
thanks very much David
Hi Richard - thanks - very generous.
Thanks very much Ken.
Hi Barry - hope you get some good sky.
Thanks a lot Rodney
Hi Paul. thank you for the feedback
Thanks for the feedback Greg. My monitor does not show anything much in terms of background, so maybe time to trade it in (or trade in the ancient eyes).
I desaturated the background a bit - did that help? http://www.astrobin.com/full/229192/0/?real=&mod=
alternatively, selective spatial filter?: http://www.astrobin.com/full/229347/0/?real=&mod=
Grateful for further feedback - of course I didn't have enough data in the first place, so everything was pushed fairly hard :lol:
Thanks Allan - how is the Newtonian project progressing?
regards Ray
Derek Klepp
29-11-2015, 09:48 PM
A great shot Ray this is one of my favourite Galaxies to view.
Shiraz
29-11-2015, 10:22 PM
Hi Derek. Thanks very much . yes it is a really attractive galaxy - it was a real thrill to see the data coming up on the screen.
alpal
30-11-2015, 07:18 AM
Hi Ray,
It's going very well.
I just need the time & the weather to be on my side.
cheers
Allan
strongmanmike
30-11-2015, 10:20 AM
Im only on my samsung galaxy about to board the new p&o pacific aria in brisbane so was gunna wait till i could have a good look at it on a proper screen but meah, couldnt wait had to comment :D ....Excellent 1365 that Ray.....nup that's all :thumbsup:
Mike
rustigsmed
30-11-2015, 10:34 AM
yep that is a beautiful shot Ray.
love the star and galaxy colours plus all the background galaxies.
cheers
Rusty
andyc
30-11-2015, 11:04 AM
That's a top quality shot Ray, I'll be impressed if I see a better one this 1365 season (mind you, with some of the wizards here...). The swishy bits of the spiral arms are reminiscent of those Comet McNaught shots with the big curved tail, and you can get lost in the details of star clouds and clusters in the galaxy. Rich and vibrant colour too, lovely! I see the blue mottling in the background too, but given my standards on colour correcting :rofl: wasn't troubled at all, I'd love to get colour as nice as that!
Might I ask how many and what length subs you used - I saw all the other technical info at astrobin?
gregbradley
30-11-2015, 05:08 PM
The desaturated background is a lot better, the spatial filtering (what is that?)
is the same or worse. Its a mottled blue noise almost a pattern noise.
Greg.
rustigsmed
30-11-2015, 05:18 PM
ahh ok I can see it, I have two monitors at work, hardly visible on one screen visible on the other. kind of like a diamond pattern wired fence has... If I was using PS i'd probably select shadows and turn the middle blue channel slider down 3-4 points. but yep I didn't notice it really till I went looking for it. still an amazing image!!! :eyepop:
Shiraz
30-11-2015, 10:53 PM
all the best with it.
thanks Mike - Pacific Aria sounds nice.
Thanks Rusty. appreciate the comment
thanks Andy. yes it does look a bit "comet like" - it is a very attractive galaxy. subs were 5 minutes for 1x1 lum and 200s for 2x2 colour. I had about 4.7 hours of lum and 3.5 hours of colour.
thanks again - yes, I can just see the blue mottled background on my netbook, but not on my 23inch monitor. In the process of sorting it out.
Greg, for the selective spatial filter, I decomposed the image into RGB channels and applied a masked wavelet filter to remove the dominant low spatial frequency components of the speckle in the blue channel background. I cannot see any significant change in the recombined colour image on my monitor, but it looks like the process upset other aspects of the colour balance - won't use it again.
regards Ray
astronobob
30-11-2015, 11:03 PM
Very nice Image Ray, looking stunning actually - beautiful sight :thumbsup:
graham.hobart
01-12-2015, 09:52 AM
A fantastic view of one of my favourite galaxies. Exquisite as always Ray!
Thanks for the view!
Graham
billdan
02-12-2015, 12:13 AM
Gooday Ray,
Excellent image mate the best I've seen of NGC1365.
Co-incidently my latest copy of Sky and Telescope arrived today and has a 3 page article on this galaxy, and the ESO photo they provide is not a match on yours. Their image is all washed out with very little colour, you should send ESO a copy of yours and tell them "this how you do it".
Some facts about the galaxy I did not know
At 52 Million light years away it is one of the closest of the Abell Galxy Cluster S373.
It is twice the size of the Milky Way, 200,000 light years across.
The super massive black hole in the centre is 2 Million solar masses and get this, the black hole is spinning at a rate of 84% of the speed of light.
Cheers
Bill
P.S. My 60in HDMI TV/Monitor showed no blotches at all
Shiraz
02-12-2015, 08:08 PM
Hi Rob - Thanks mate.
Thanks very much Graham!
Thanks very much Bill. thanks also for the great info - prompted some interesting reading. Sure is staggering to imagine what that black hole means. 2 million miles across, 2 million solar masses and as you say, an event horizon rotating at nearly light speed and dragging the local space along with it - unimaginable!!!
thanks also for the monitor feedback - seems like some can see a fault, others not, so I will have to adjust my processing to make sure that it is not an issue for anyone.
regards Ray
Bassnut
03-12-2015, 07:07 PM
Whoa, excellent!. You must be using the cheat feature in PI :eyepop:
Shiraz
04-12-2015, 02:31 PM
thanks Fred. Nope, no cheating here :) - where would be the fun in that?.
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