Like one of those big mutant monsters from the movie, 'Pacific Rim' as it emerges from the depths, here we have the "Kaiju cloud".
This Ha rich object is located near NGC 2451 and ó Pup. As there appears to be no O2 present I've instead used N2 & S2 and mapped the image as per the following recipe ...
Quite tricky to map the colours and still show three seperate wavelengths as there are all so close together, so all traditional colour maps went out the window! Here is my twist then on "original HST recipe".
Thanks for looking, C&C welcome
Disclaimer * Processed on my laptop while on holidays - hope the colours are ok...
Is there much N actually there? It seems to me that for image train f-ratios less than about f/4 you are getting lots of Ha in the N channel. I'd be interested to know how different the Ha and N subs are....
This is very interesting approach Andy and a lovely job, well done on using the lap top on Holidays too ...how did you get away from the W & K's
Oh and good on you for trying to show all three wavelengths too
As you know I am currently hammering this too and although there is heaps of Ha, I note as you have, there is essentially no OIII so the use of the NII was a good approach, how much of that is there? Given the lack of OIII (I don't have an NII filter) and not thinking an SIIHa version would work that well..? I think I have decided to do an LHaRGB version
My FOV shows the whole feature, and turned 90deg anticlockwise, it resembles the profile of the BFG
Cheers Simmo - I must have been channelling Prince during processing
Quote:
Originally Posted by RickS
Very cool, Andy
Thanks Rick
Quote:
Originally Posted by Placidus
A mountain of amethyst!
There is an excellent hippopotamus lurking at bottom left.
Well done!
Cheers M&T - Yes, it has a remarkable crystalline appearance
Quote:
Originally Posted by atalas
Excellent depth Andy and a fantastic object presented extremely well
Cheers Louie, thanks very much for the positive vibes.
Quote:
Originally Posted by markas
Great result! A really unusual image.
Is there much N actually there? It seems to me that for image train f-ratios less than about f/4 you are getting lots of Ha in the N channel. I'd be interested to know how different the Ha and N subs are....
Whatever, a terrific image
Mark
Hey Mark, thanks for the nice compliments on the image.
As to your question, there was "just" enough difference between the Ha & N2 to map as seperate colours, and as the S2 signal was fairly weak I had to bin it x2.
From the Astrodon website - Ha emits at 656.3 nm and NII emits most strongly at 658.4 nm (and weakly at 653.8 nm). These are very close together spectrally.
Our 3 nm H-a begins to separate both emission lines and reduces the NII contribution significantly.
Our recent blueshift data show that Astrodon 3 and 5 nm filters can be used with nearly all systems as fast as f/3.5 with virtually no loss in emission signal, so you do not need to buy custom "upshifted" filters if you have both fast and slow systems.
Not sure the name will stick though Andy.
I would prefer "Mystic Mountain" or maybe the "Cumulonimbus Nebula".
Well Jeff, when you go find your own patch of new/rarely imaged sky, you get to name it whatever you like!
My 9 y/o son named this one, so there it is! Mystic Mountain is kinda cool though
Quote:
Originally Posted by strongmanmike
This is very interesting approach Andy and a lovely job, well done on using the lap top on Holidays too ...how did you get away from the W & K's
Oh and good on you for trying to show all three wavelengths too
As you know I am currently hammering this too and although there is heaps of Ha, I note as you have, there is essentially no OIII so the use of the NII was a good approach, how much of that is there? Given the lack of OIII (I don't have an NII filter) and not thinking an SIIHa version would work that well..? I think I have decided to do an LHaRGB version
My FOV shows the whole feature, and turned 90deg anticlockwise, it resembles the profile of the BFG
Mike
Hey Mike, thanks for the nice words!
As mentioned above the N2 signal is there and closely aligned to the Ha. As the S2 was so weak I had to bin it x2 so your idea of LHaRGB has great promise.
Unfortunately that's not an option from my suburban backyard, so I'll be very interested to see your results!
Quote:
Originally Posted by Camelopardalis
Beauty Andy
Thanks very much Dunk!
Quote:
Originally Posted by JA
Very mystical Andy. Great Image
Best
JA
Cheers JA - a new target for everyone to have a crack at now
Last edited by Andy01; 13-03-2018 at 09:05 AM.
Reason: typo
I just noticed this on Tom Davis's Astrobin page. Might help identifying some of the objects - looks like there's some catalogued cometary globules in there:
Hi Andy,
Interesting object and discussions...thanks!!
Cheers,
Tim
Cheers Tim
Quote:
Originally Posted by Paul Haese
Nice presentation Andy. Certainly an interesting area to image.
Thanks Paul- it’s rarely imaged, and dim- give it a crack!
Quote:
Originally Posted by troypiggo
I just noticed this on Tom Davis's Astrobin page. Might help identifying some of the objects - looks like there's some catalogued cometary globules in there:
Cheers Troy, it’s unclear when Thomas imaged it, was it 2009 or 4 days ago?
Either way, it’s a fine rendition.
To be honest though - I enjoy Mike’s wider field of view.
Quote:
Originally Posted by h0ughy
ethereal image. i can see two birds in there....
Okaaaay then - Paradolia rules!
Cheers Houghy
Btw- This new completely colour re-mapped version was shortlisted by David Malin for this year’s awards.
...
Cheers Troy, it’s unclear when Thomas imaged it, was it 2009 or 4 days ago?
Either way, it’s a fine rendition.
To be honest though - I enjoy Mike’s wider field of view.
...
I think he imaged it quite a while ago, but has only just joined Astrobin and started uploading his library of images. Quite a gallery he has.
Nice one Andy...don’t sell yourself short, this one looks great in a narrow field and no surprises it got a shortlist gong at this years’s CWAS/Malins.
I like your approach, no FIGJAM, just quiietly achieving in the background, asking questions and improving your technique. Best of luck at the Malin’s