Bipolar nebula in Norma & NGC6188 *added link*

[multiweb]

I finally completed my Ha scaffold over three consecutive nights this week. I now plan to start shooting some Oiii then Sii to complete the tricolor version.

There are about 6 panels. Approx 20x10min per panels. Captured with my CF triplet at prime focus with Nebulosity. QHY8 on G11, guided through the finder with QHY5/PHP. Processed in CCDStack/CCDIS. Registered in Registar and blended in PS CS5.

The bigger version is here (http://cid-6930d3ad12d5044c.photos.live.com/self.aspx/Astrophotography/NGC6188%5E_ha%5E_SFD%5E_f.tif). Click on the link and you'll get a large version (80%) in a Tiff file - 3000px wide approx.
There is also a more download friendly version here (http://www.astropic.net/astro/NGC6188_ha_SFD_f.jpg). (only 3MB)

Hope you like it. I'm pretty happy with it.

Thanks for looking and as usual fire away if you see anything to improve. :thumbsup: (like my guiding :P)

[CoolhandJo]

Wow coming along very nicely!

[renormalised]

Nice shot, Marc. I like the little expanded view boxes you added to show the detail in the nebs. Stars look nice and tight in the small version of your piccie...haven't looked at the other version, yet. But all seem fine to me :)

[TrevorW]

Good Work Marc like the way you've shown different sections of the image

[RobF]

Thanks for linking in the big version Marc. This is already looking very VERY nice. Starting to show wonderful depth. Can't wait to see where you go with it next. Very expert touch with the processing.

[Bassnut]

whoa, huge amount of work there, and it shows. Very zoom inable, and the close up boxes are a cool touch in the page post. Expert stiching, and grand detail

[Lester]

Wonderful image Marc and well pressented. Looking forward to the colour version. Thanks for the view.

[strongmanmike]

Looks great Mark :thumbsup: I like the zoom in inlays too - cool!

Do you have anything bigger than the 150k IIS image.. but smaller than the tablecloth sized 12meg link? :rolleyes:

Mike

[multiweb]

Thanks for the comment Paul - Looking forward to shoot other channels. Must sleep first :zzz2:


Thanks for looking Carl. :thumbsup: Stars are ok. I need to refine my guiding a bit now. The scope is so sharp other flaws are surfacing now. When does it end? :)


Thanks Trev. Glad you liked it. :thumbsup:


Thanks a lot for the comments Rob. I did a fair bit of work in noise reduction and balancing the dynamic ranges in the various panels. Glad it paid off. :thumbsup:


Thank you very much Fred. :thumbsup:


Thank you Lester. :thumbsup: Narrow band it will be. UNlikely RGB. Not enough time and dark skies.


Thanks Mike. Yeah sorry, added a special link (http://www.astropic.net/astro/NGC6188_ha_SFD_f.jpg)just for you. :)

[strongmanmike]

Now THAT's what I'm talkin'bout... girlfriend! :thumbsup:

Looks awesome

I think I can get the filiamentary area of the neb and the PN in one frame of the AG12-PL16803...? My next target :thumbsup: ...some good eseeing wouldn't go astray :rolleyes:

Mike

[Hagar]

I like it Mark. Huge field with the crops work for me. Beautifully presented.

[multiweb]

That'd be a good one for you yeah. Looking forward to it. :thumbsup:



Thanks for looking Doug. Glad you liked the montage. :thumbsup:

[madbadgalaxyman]

I would like to point out that the object in the photograph is not exactly NGC 6188.
The two-degree scale HII region in the photo is called
RCW 108, and only the small core of this nebula was catalogued as NGC 6188.

A good nickname for RCW 108 could be "The Ghost of Eta Carinae", in that it sort of resembles a ghostly version of Eta Carinae. This gigantic object is sometimes faintly but definitely visible in binoculars, on a very dark and clear night.

Most of the brighter emission nebulae in the Ara and Norma region are NOT actually in the NGC-IC ...... though some of them are bright enough that they should have made it into the NGC.

In fact, the only catalogue that covers the brighter Nebulae that are found between Ara and Circinus is called RCW, that is:
Rodgers Campbell & Whiteoak.
(There are some other HII region catalogues for the southern sky, but they include many ridiculously faint objects)

The Ara to Circinus Milky Way is "the hole in the NGC-IC";
it simply does not cover the nebulae in this region!

cheers,
madbadgalaxyman

[Ross G]

Hi Marc,

Fantastic shot. It has such depth and detail.

You are doing some amazing things!


Thanks.

Ross.

[madbadgalaxyman]

You can find an observing list of RCW nebulae in the Ara & Norma Milky Way in the "Observational & Visual Astronomy" section.

cheers,
madbadgalaxyman

Before I spent the last seven years studying only external galaxies, I was a night watchman of the Milky Way. My idle boast was that no nebula could escape my eye and my OIII filter!! (Ha Ha)

[multiweb]

Thanks for the info Robert. TBH I didn't know. I just key-in NGC6188 in the gemini to get me there. I'll try to plate solve the field and post see what it comes up with. It's a bit like the HH I guess, IC434 or B33, etc...




Thanks Ross. We've been having a real good run of clear skies in Sydney lately. Since the 7th I've imaged every single night but for Sunday. I was too tired. I did last night too though and probably do tonight then I think it's back to cloudy... :rolleyes: ... and lots of processing to do. :cool:

[Ric]

Excellent work Marc, the large version is a beauty, very crisp and detailed.

When you add the the OIII & SII it's going to be something special indeed.

[multiweb]

Thanks a lot Ric. :thumbsup: Yeah I hope so! :prey: :)

[John Hothersall]

Big version is very impressive looks like a great project developing here can wait to see finished result.

John.

[multiweb]

Thanks John. :thumbsup: Yeah I'm pretty excited about it too. I'll have to start on the Oiii when the moon gets old. Still doing Ha around for now. It's too bright and too high.

[irwjager]

That's awesome work Marc! Like John, I can't wait to see the final result! Nice to see you put TIFFs up too. I love it when I can zoom in and not have to worry whether a little detail is an artifact or real.

[multiweb]

Thanks Ivo. :thumbsup: Yeah TIFF keeps a real good dynamic range as you stay in 16bits as well as no compression artefacts at all. But the file size is huge. Still nice to have though.

I'm experimenting with various registration algorithm as well as different rejection types and might redo a couple of panels process. Poisson seems to work well on small stacks but it's very destructive on the stars unless you are over sampled. Also found Nearest neighbourg registration not very star friendly on under sampled pics. Like 3asp :question:

[bokglob]

Classy work Marc:thumbsup: Looking forward to the SII & OIII blend.

[multiweb]

Thanks Darrel. :thumbsup: Should start shooting Oiii first as soon as the moon goes down.

[Octane]

Marc,

History is littered with the slain bodies of men who have attempted to capture this nebulae and process it so that it looks reasonable, but failed dismally.

What you've posted so far is just stupendous.

The "wall" as it were, is very difficult to process so that features are visible. I've not been able to do this properly. In fact, it was the first target I slung the STL/FSQ combination to, but, only managed an hour of hydrogen alpha before fog settled in. That was a year ago. Time won't allow me to chase this elusive sucker this year as I've got bigger fish in mind, but, I can't wait to see your masterpiece when it's completed.

Awesome work, mate.

H

[multiweb]

So you liked it that much hey? I'm stoked mate. Thank you very much indeed. :thumbsup:


Thanks again H. :thumbsup: You want to check Doug's version (http://www.iceinspace.com.au/forum/showpost.php?p=721774&postcount=1)on the FSQ106 then. That's a corker and in one take. Huuuuge field. :)