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View Full Version here: : Wide field M16 in 3nm Ha


Bassnut
16-07-2011, 06:36 PM
Here (http://fredsastro.smugmug.com/Photography/Astrophotography-1/16631549_fD6fJj#1385882071_CJtChBv-A-LB) is an interesting bit of M16 with a 3nm Ha filter. Disturbingly fuzzy unforch, have yet to work that out. No PS on this one, at all, natch.

I was after the tower bit actually, but this looked easier to process for a laugh. Ill post the tower bit later.

20 min subs, lots of them, on an ST10XME with AO.

Hagar
16-07-2011, 06:47 PM
Interesting OK Fred. That narrow filter sure ditches the stars around the tower. Nice detail in the folds of the tower though.

Mighty_oz
16-07-2011, 06:48 PM
Looking good, can't seem to focus on it tho even with my glasses on must be me hey :doh:

apaulo
16-07-2011, 06:49 PM
Hi
Just surfed your gallery, what a collection of fantastic images.
Excellent standard indeed.
Regards Paul.

multiweb
16-07-2011, 07:00 PM
:eyepop: Pretty awesome!

errr... where are the stars? :P

Bassnut
16-07-2011, 07:13 PM
Yes it does, a nifty bonus. The tower bit I meant was the other tower thing, Im sure it has a name, below this bit.



Well, thats the thing, it is out of focus, could be seeing (the atmosphere, not yours).



Thanks Paul, I think sugmug is the ducks guts now, nice feedback.



Dunno, they just wernt there, cant explain it really, but Im glad they disappeared whilst I was imaging.

Hagar
16-07-2011, 07:35 PM
OK Fred understand now. 20 min exposures and lots of em...... I'll stick with the 7nm I think.
You could frame it up and down and save my neck a bit. I'm getting older you know.

John Hothersall
16-07-2011, 08:26 PM
Still a good result and 3nm really strips the stars down, I use the 5nm including NII line. Detail here seem tough to get looking at others efforts in Oz with the JetStream interfering. This is the best structure I have seen this season even though its quite soft.

John.

jase
16-07-2011, 09:20 PM
Up close and personal. A no BS image. I like your style Fred. Pleased it hasn't changed.

Bassnut
17-07-2011, 07:56 AM
Yes, 7nm sure lets in more photons, and goes deeper, but slightly less Ha detail. 3nm subs are noisier too. there are annoying trade offs either way.



There are some subs from an earlier LX200 12" effort thrown in to reduce noise. Those subs were not as sharp, but had more signal. I was kidding about the stars BTW, I healed them out ;). Ill do this again with more RCOS data, much sharper, but its a bit of a "done that" sort of object so only when theres nothing else to image in my limited sky view.



Thanks Jase, removing stars is BS, but I get away with it ....... sometimes :D.

gregbradley
17-07-2011, 03:01 PM
Impressive Fred. You see tiny rivers of gas flowing out from the edges of the nebula.

That's terrific resolution for urban imaging.

Greg.

atalas
17-07-2011, 05:22 PM
Excellent detail Fred...doesn't look sharpen either so quite extraordinary.

RobF
17-07-2011, 06:09 PM
Well I can't figure out why everyone is being so polite. I would have said that's #$@!@ #@$# amazing :2thumbs:

Octane
17-07-2011, 06:13 PM
I agree with Rob; that is an astounding image.

Damn!

H

Lester
17-07-2011, 06:21 PM
Top Hi-res image Fred. Thanks for the view.

irwjager
17-07-2011, 06:51 PM
Back in fine form Fred - narrow band, narrow field, nary a star in sight. :thumbsup:
I applied some of my weird Franken-Decon, lifting a little bit of the fuzz. Your license is waiting... ;)

gregbradley
17-07-2011, 10:35 PM
Amazing. You have some cool tools there Ivo. You've got a star rounder tool as well right?

Greg.

irwjager
17-07-2011, 11:01 PM
Yes. But let's keep it on-topic :)

One thing I'll say though is that I constantly feed ST images from IIS to fine tune the automated stretching algorithms. Funny thing is though, with Fred's images, they always come out as they came in, i.e. the computer thinks they're perfect! (and so do I).
...which leads me to believe that Fred, in fact, is an android life form of some sorts... :question: :D

strongmanmike
17-07-2011, 11:21 PM
Hey Fred, I can't open this...?

Can you post a picture here so I can see it..? Ivos looks cool

MIke

iceman
18-07-2011, 05:25 AM
The one on the left looks like a hand-puppet!

Nice image Fred! Hi-res baby.

gregbradley
18-07-2011, 08:10 AM
[...which leads me to believe that Fred, in fact, is an android life form of some sorts... :question: :D[/QUOTE]

Yes that's confirmed!:lol:

multiweb
18-07-2011, 08:30 AM
Wow! That repro brought up a lot more details. :thumbsup:

strongmanmike
18-07-2011, 09:09 AM
Ok I can see it at work (something wrong with my computer at home..??) that's certainly a wide field you have hammered there :eyepop:

The Eagle's Head in Ha always looks good.

You've done this area a few times now, can you get in any closer :question:

Mike

Bassnut
18-07-2011, 10:53 AM
Gee thanks Guys. Ill have to abuse you more often Rob if it gets that kind of response ;) :D.

Ivos repro is pretty cool, I couldnt do that in PS .Its just a tad over done perhaps, but its got me hooked. I won a copy of Star tools as a door prize at the AAIC, so ill be keen to give that a run on a few images now. I recon itll be very usefull on fuzzy narrowfield.

Mike, the 3 fingers are way overdone now, ive got huge random data of some other bits of M16 collected over the years, so ill have a go at them.

RobF
18-07-2011, 07:04 PM
:) No thanks - but credit were credit due, and this is very Hubble-esque
(besides - what do I know about imaging in a C8, ... or a refractor, .... or an RC, .....or......:question: :lol:)

gregbradley
20-07-2011, 08:09 PM
I had another look at that image. That is insanely good Fred. Never seen it with more detail.

You gotta do a mega hour O111 and S11 to complement that and the same processing routine. It'd be a world class image.

Greg.