With the awful weather over SE Australia lately, there's been no opportunity to image anything new.
Instead, I've gone into the archive and completely reprocessed this image of GC4 from our Christmas holiday in Tasmania 2015. I kinda owed it to the family to get this one right as the poor kids had to put up with seasickness and no internet on the Spirit of Tassie for 8 hrs each way just so I could bring all my AP gear with me!
This is my 4th attempt at processing this data set, taken under dark Tassie skies near Burnie, on and around a waxing moon.
I also added a few Hrs of Ha from home in Melbourne.
It's a really dim but fascinating object and has been very challenging to process in HaLRGB.
There are a few very good versions on the net, including images from IIS'ers Strongman Mike, Greg Bradley & others, but very few renditions in HaLRGB.
6 hrs Ha 20min subs
3.5 hrs LRGB 10 min subs
Wiki says - CG 4, commonly referred to as God's Hand, is a star-forming region located in the Puppis constellation, about 1,300 light-years (400 pc) from Earth. Its head is about 1.5 ly in diameter and its tail is about 8 ly long.
It is a cometary globule, one side of which has been blown outwards into a long tail, resembling a comet and hence named so. CG 4, and the nearby cometary globules, generally point away from the Vela Supernova Remnant, located at the center of the Gum Nebula.
Probably the first time I've seen a HaLRGB of this thing Andy and it's a good one.
Cheers
Steve
Cheers Steve, yes I'm surprised that almost no-one else has attempted this in HaLRGB as there is significant Ha signal present. Probably because it's a such a difficult target I guess! Maybe others will give it a shot now - Thanks for the compliment
Quote:
Originally Posted by Placidus
I really like the star colours in this version.
Thanks Mike - I rarely get under dark skies and it certainly makes a difference with LRGB. I think the star colours stand out quite well here because of the Ha red background, Cheers
Quote:
Originally Posted by gregbradley
That's a great image Andy. I like the wider view showing that large Ha area to the left.
Star colours are very well done as well.
Greg.
Chers Greg, I used used your image as a starting reference so that's high praise indeed, cheers
Quote:
Originally Posted by RickS
Well worth the effort of 4 repros, Andy CG4 always reminds me of a Dune sandworm.
Hey thanks Rick, sure was a hard one to process alright - I too loved Dune and all of it's numerous sequels from the Herbert dynasty. I was at the premier of the Movie and often wonder what David Lynch's movie would have been like if he was given free reign without interference from the studio. Supposedly there's at least two hours of footage on the cutting room floor!
Quote:
Originally Posted by billdan
Very nice Andy, it looks like a stallion jumping over a fence to get to that galaxy in front of its nose.
Cheers Billdan, Paradolia at it's finest! Well done
Did you modify it from the first posted version? I like the Ha colour you get here better. The first one was perhaps a bit too much red and you got a nice hit of magenta going on this one to tame the all red and show the H Beta.
Greg.
That Tassie trip came up trumps then, it's a really good image.
Well done!
Thanks DJT, I kinda owed it to my family to make the best image I could from the data, delighted that you like it!
Quote:
Originally Posted by markas
Andy,
The Ha is truly remarkable. On my 3hour LRGB image, I can see it very faintly, but this puts a totally different perspective on the region!
Mark
Thanks Mark. If you get a chance, I'll be interested to see what happens when you get 6+ hrs of Ha to add to your image. Now I'm wondering if there's any O3 or N2 present as well?
Quote:
Originally Posted by gregbradley
Did you modify it from the first posted version? I like the Ha colour you get here better. The first one was perhaps a bit too much red and you got a nice hit of magenta going on this one to tame the all red and show the H Beta.
Greg.
Hi Greg, I agree and yes it's a complete repro from scratch (again!), glad you like it though - ridiculously difficult image to process so not one for the feint hearted!
Quote:
Originally Posted by topheart
Hi Andy,
I really like it!! It has a perfect sinister feel to it!
I love the redness....like blood... that goes with the fearful scene.
Well done!
Cheers,
Tim
Well now that's an interesting interpretation Tim - very cool!
Thanks for the nice compliment on the image
CG4 always reminds me of a Dune sandworm.
