This is another mini data image this time of the Cats Paw Nebula in Scorpio NGC 6334, done and dusted in less than a night - in bed by 2am ...cold night (-3C) and fog came in just as I was finishing the data, so good timing
A lot of nice detail there Mike. That billowing cloud is the best part.
The 694 makes an excellent narrowband camera being so sensitive to Ha and O111. I am surprised also at how quickly you can get a solid Ha image out of it. With your F3.8 it must build up very quickly.
Nice one Mike, with some good resolution too! it's fascinating how the various clouds that make up the Cat's Paw are all vastly different in appearance. Also interesting how this nebula is so predominantly red, ala the nearby Lobster.
Incidentally I've been gathering data on this same target on and off over the last month or so. I still miss the blue channel though but if the clouds clear then I hope to wrap it up and start processing the data.
Hey, what can I say, it's essentially a red nebula along with nearby NGC 6357, so ain't my fault With a little more colour data I could perhaps accentuate the small amount of non red that resides in the very centre of the nebula group but...according to ESO, it is a RED NEBULA and according to Monsignor Malin:
"the star-forming nebulae NGC 6334 and 6357 pictured here are buried in the plane of our Galaxy in the direction of Scorpius, and are seen through thick dusty clouds. The dust both scatters and absorbs blue light along our line of sight, giving these nebulae a deep red hue"
(just have to Google it)
Quote:
Originally Posted by gregbradley
A lot of nice detail there Mike. That billowing cloud is the best part.
The 694 makes an excellent narrowband camera being so sensitive to Ha and O111. I am surprised also at how quickly you can get a solid Ha image out of it. With your F3.8 it must build up very quickly.
Greg.
Hi Greg, the H694 is a great camera....no darks no flats And although I am not resigning my life to endless hours of data at all costs ... for sure the AG12 makes my lazy approach meaningful
Quote:
Originally Posted by SkyViking
Nice one Mike, with some good resolution too! it's fascinating how the various clouds that make up the Cat's Paw are all vastly different in appearance. Also interesting how this nebula is so predominantly red, ala the nearby Lobster.
Incidentally I've been gathering data on this same target on and off over the last month or so. I still miss the blue channel though but if the clouds clear then I hope to wrap it up and start processing the data.
Thanks Rolf and although they are welcomed, it is also nice to hear comments other than those just to do with processing preferences The pair NGC 6334 and 6357 are a classic duo for winter sky imaging...look forward to seeing yours. You may already be doing so but given you will likely not collect as little colour data as I did you shoudl eb able to accentuate the little bit of colour that resides in the central area of the paw
I think that the colour looks about right - hydrogen emission is predominantly red with a bit of blue, especially through dust.
Cheers Ray, see explanations in reply above
Really enjoying getting out and doing mini data these days and getting a completed image in one night...just as rewarding and fun as the current mania of mega data
just realised that one of those balls looks a fair bit like Henize70 in the LMC. wonder what the mechanism is that produces this sort of tangled structure. Apologies for posting a (very ordinary) image in your thread - will remove if you object.
just realised that one of those balls looks a fair bit like Henize70 in the LMC. wonder what the mechanism is that produces this sort of tangled structure. Apologies for posting a (very ordinary) image in your thread - will remove if you object.
No objection at all Ray..are you thinking it looks like the top left or bottom left paw pad..? I'm guessing the lower left jelly fish like pad?...funny, that Henize 70 is pretty red too
Hi Mike,
it looks a bit strange - almost too red yet the stars are mostly all white.
I think it needs some Photoshop cheating to make it look better.
e.g.
selecting stars & increasing their colour in LAB mode yet reducing the colour brightness of the nebula in the other direction.
I know you're too pure of heart to do do that though.
Great result for micro data Mike - never seen them blues before either, keool, & your always capturing the subtle stuff
Cheers Bob, yes taking a complete LHaRGB image in less than a full night is pure blasphemy I know There seems to be some colour variation in the centre between the paw pads with the bit of white and blue showing in my shot appearing more obvious in other deeper shots of the area and the main paw pads show some very subtle shadings of orange/red but it is a relatively...red nebula
Quote:
Originally Posted by alpal
Hi Mike,
it looks a bit strange - almost too red yet the stars are mostly all white.
I think it needs some Photoshop cheating to make it look better.
e.g.
selecting stars & increasing their colour in LAB mode yet reducing the colour brightness of the nebula in the other direction.
I know you're too pure of heart to do do that though.
cheers
Allan
Strange huh?...compared to what? Perusing the many variations on the net it doesn't really look strange to me (but then I am strange ), it is a red nebula, arguing the toss about what shade of red is perhaps a little semantic? On my monitor the stars show pretty obvious, although somewhat subtle, colour differences with a lot of yellower fainter stars, I imagine the more distant stars are probably affected by the reddening like the nebula and the result is less blue stars?
Pure of heart, moi? nooooo, I'm a rebel...no darks and no flats remember
this time of the Cats Paw Nebula in Scorpio NGC 6334, done and dusted in less than a night - in bed by 2am 
...cold night (-3C) and fog came in just as I was finishing the data, so good timing 
How was the seeing? Maybe it was the fog.
With a little more colour data I could perhaps accentuate the small amount of non red that resides in the very centre of the nebula group but...according to ESO, it is a 
And although I am not resigning my life to endless hours of data at all costs 
... for sure the AG12 makes my lazy approach meaningful 
