RCW114 NGC6188 The Wolf nebula

[gregbradley]

Here is a bit closer in view of RCW114 that Andy has imaged part of. Its the faint nebula in the shape of a heart off to the left.

To the bottom right we have NGC6188 which is commonly imaged. About midway up is the Wolf Nebula and it looks to be on the back of a large bird.

Above that is another nebula that looks familiar but I am not sure of its name, I'll hazard a guess its the Seagull Nebula.

I have this one in colour as well. Quite hard to process for some reason.

My very expensive telescope here was a $120 Pentax 67 165mm F2.8 lens at F2.8 for the Ha. Camera is a FLI Proline 16803 which is almost medium format in size (36mm square).

I'll post the colour version as well. I think it came out best in Ha though.
I guess no one images it because its so huge. Its way too big for an FSQ image without doing a multi panel mosaic with a large sensor.

I found one little reference to RCW114:

"This huge but very faint nebula is probably a ring nebula surrounding the Wolf-Rayet star WR 90, expanding into a pre-existing cavity created by the supernova remnant SNR 343.0-06.0."

This paper here suggests its a supernova remnant in its later stages (Vela SNR is considered young). This seems most likely as it looks a lot like the Vela SNR.

http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3686&context=eispapers


http://www.pbase.com/gregbradley/image/165901138/large regular size

http://www.pbase.com/gregbradley/image/165901138/original large size

Greg.

[RickS]

Lovely field, Greg! Looks great just in Ha. That's the Prawn at the top.

[gregbradley]

Thanks Rick. The Prawn, I thought it looked familiar.

Also I just noticed 'The Dark Tower" is off to the right a bit above the Wolf Nebula. That's an interesting stream of Ha like a river that winds around the Wolf and the Dark Tower.

Greg.

[strongmanmike]

So, a Wolf walks into a Tower with a Whip...the barman says "don't come the raw Prawn with me fella, you are no match for a coupl'a Dragons!"

...not funny....:question:

Great field Greg :thumbsup:

Mike

[RickS]

I did a skeleton of a mosaic in this region last year with the AP140 and U16M with the intention of collecting lots more data this year, but alas... it just hasn't happened.

[Andy01]

Boom, tish! That's good Mikey :D lol

Lovely field Greg, did you get O3 on it at all?
Cheers
Andy

[gregbradley]

It would take a while but boy it would be amazing.



That's funny Mike.:lol:



No O111 yet. I do have O111 and S11 from an earlier time when I used a Nikon 50mm F1.8G lens. It covers the whole MW. I can add that together.

Greg.

[Placidus]

That's most excellent, Greg. The paper (from Wollongong!) on the NII/Ha and SII/Ha ratios was very helpful.

We spent ages and ages looking at this image. Not just the SNR but the big ring that you described as a river around the Wolf. Fascinating.

[Ryderscope]

A great field Greg. Wonderful in Ha.

[Martin Pugh]

Lovely reference image there Greg.

More contrast around NGC 6188 though methinks.

cheers
Martin

[gregbradley]

Thanks Mike. There are several possible imaging targets revealed in a few places I think.



Thanks very much for that.



Cheers Martin. I took your advice and upped the contrast on a few of the main nebula interest items including 6188. Its an interesting dust formation in NGC6188. It looks like a giant arm with twisting muscles ready to grab something!

Greg.

[Martin Pugh]

Yes, better!

cheers
Martin

[troypiggo]

That's a lovely field putting together plenty of popular targets. Love it.

[gregbradley]

Thanks for your advice Martin. I am sure I speak for the forum when I say we are privileged to have you on this site and I for one are appreciative of any advice that helps me take my images to the next level.



Thanks Troy. I have to learn how do drizzle integration though. Not for the Ha but for parts of the colour image.

[gregbradley]

Here is the image in colour. It was hard work to get it to this stage. Harder than normal. I also need to learn how to do drizzle integration.

http://www.pbase.com/gregbradley/image/165901232/large

Greg.

[Retrograde]

Very nice Greg - that Ha is really deep and just everywhere. I can't even imagine what it's like to blend Ha with a colour image. :thumbsup:
Such an amazing part of the sky.

[Paul Haese]

That's a huge field of view Greg. Lots of interesting objects in the field many of which we have imaged.

[gregbradley]

Yes Ha is very extensive and its obvious there is a lot of Hydrogen in the Universe. It all looks pretty violent as well.



Its a very interesting field. I can see some other areas that are worth looking at for a widefield image in the future.

Greg.

[atalas]

What a great field Greg....awesome seeing so many familiar objects like this :thumbsup:

[gregbradley]

I also thought it was an interesting slice of the Milky Way.

Greg.