View Full Version here: : M16Hargb/ Ngc6744lrgb
richardo
18-07-2007, 01:31 PM
Hi all,
not great conditions here this winter, but the farmers are happy!:sadeyes:
Managed to get some colour on these objects.
Would have liked double the amount of colour on Ngc6744 due to it's
low surface brightness but knew I only had one
night to get two lots (M16 as well) due to more bad weather on it's
way.:lol::doh:
Gradients to deal with on Ngc6744 which I always seem to get
with this object...:shrug:
Perhaps a little crunchy on my processing, might have another look.
Link to my front page.... for M16, select the top L/H corner thumb in my
'most recent images' section.
http://www.baytop-observatory.com/
Hope your having better luck!!:rolleyes:
Cheers:thumbsup:
Rich
iceman
18-07-2007, 01:43 PM
Wow Richard, that's stunning! Very detailed and sharp from corner to corner.
Lovely image.
Hi Rich, fabulous images that's for sure. M16 really gives you that appearance that it's just hanging there and full of lovely detail.
NGC 6744 is very detailed as well, the spiral arms are showing heaps of structure.
Cheers
Very impressive work Richardo! :thumbsup:
NGC6744 is exceptional. The spiral arms exhibit great structure with subtle pink HII regions present. There is quite a few background galaxies present. I would have imagined the galaxy nucleus as being a little brighter and colours richer but that’s just a matter of opinion. Marvellous stuff.
M16 is looking good, despite the notorious pink hues common with HaRGB blends. How did you combine the data – Did you first blend the Ha at 50%, then manage the colours before finally introducing the Ha at 100% or did you first blend the Ha data into the R channel to make an HaR blend, then colour combining(then optionally adding the Ha as the luminance)?
With only 24mins per colour channel it’s going to be tough to balance the contrast of 117mins of Ha data (vast contrast differences). You can stretch the colour data you’ve got, but only so far before it introduces too much noise. Under the circumstances, you’ve done an exceptional job at processing.
Dr Nick
18-07-2007, 04:49 PM
I love it! ;)
Nice, just soft focus, i like it like that.
Garyh
18-07-2007, 05:58 PM
Both stunners Rich!!..:eyepop::thumbsup: Always enjoy your images!!!
So much detail even with the seeing being iffy.
I don`t mind a little noise as removing it usually means a loss of fine detail!!
The pillars in M16 have heaps of detail and look fantasic against the rest of the neb!!!!!!
cheers Gary
bluescope
18-07-2007, 06:51 PM
Yyyyyyyyyyyep !
What can I say Rich .... I've said it all before !:eyepop:
:thumbsup:
richardo
19-07-2007, 01:45 AM
Thank you Iceman !!
Thanks a heap Ric, previous images of ngc6744 I've had with other scopes have never shown as what this newt is pulling in.
I'm pretty happy now I've got my Newt to where I want it.
Just need some good clear ones ;)
Hi Jase and thanks for the nice comments as well as your good observations concerning N6744....
I wasn't overly happy with the brightness and vitality to the stars or the galaxy on the original, so I've just uploaded another redux which I think has improved the overall effect that you mentioned and that I was seeking.
Still the lack of colour data is it's down fall not to mention the poxy gradient line to the top and some cropping needed.
I also did a bit of Neat noise reduction to clean things up a bit.
Just refresh the page to load the new version.
My M16 I brought the rgb composite into PS, did a star mask to select most of the stars and hit 'minimum' filter set to 1... then used fade to 50%, this was to reduce the rgb's stars size to match the Ha. Then hit 'channels', scolled down to the red channel, copied it to a new background, added the Ha at around 40-50% 'normal', merged then copied this back to the red channel on the RGB. Then added the Ha as lum using Steve Canistra's Lum corrected LRGB method, which I always use to retain control and also keep my stars and object from getting too washed out. I then did some selective masking to areas of interest to push up the contrast... after this it's a blur,.. a little of this a little of that.
It was tough going processing this one and generally like to have Lum to use as well.... but weather calls for a minimalistic approach from the norm..
gol darn these anti imaging skies...
Appreciate your comments:)
Thanks Nick! The weather has been all over the place and had a mixture of reasonable subs with average stars and other subs with stars a bit on the mushy side to combine... guess we gotta make do with what we get!!
Focus Max did it's best with what it had.. my guiding was a bit iffy with the guide star fading in and out...
Come on clears skies:(
Good on ya gaz for the great comments.... you are too kind..:cool2:
Been a lot of objects I'm missing due to this weather... plus that little bit of extra time on these dimmer subjects would be nice.
Thank you Steve!!
And a big thanks to all for taking a peek and your great comments.
Cheers, beers and dark clear ones to you all.... :)
Rich
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