View Full Version here: : First Cut Tarantula HaOIIIOIII V2 added
Hagar
29-10-2010, 12:58 AM
This is my first and a very quick process of Tarantula Nebula in Ha OIII OIII mapped as RGB.
10 X 10 minute exposures of both Ha and OIII combined in CCDStack and stretched in PS CS4.
I will have another look at it in the morning and probably scratch it or at least redo it again and again.
TrevorW
29-10-2010, 01:26 AM
Good image your have picked up a lot of dust there Doug but you may need to work on not drowning out the central star cluster in 2070 although a bigger image may show it better, IMO
Cheers
gbeal
29-10-2010, 05:27 AM
Very nice Doug, very nice. I too am into Tarantula mode, shot the Ha last night, and weather willing will do the O3 tonight.
Gary
multiweb
29-10-2010, 08:12 AM
Love it! Really well done. :thumbsup::thumbsup::thumbsup:
CoolhandJo
29-10-2010, 11:01 AM
Wow - thats looking really good! Very crisp, with loads of depth!
desler
29-10-2010, 11:38 AM
Wow Doug, That sort of quality is just wrong. Really sharp and nicely blended image!
I really do like it!
Darren
strongmanmike
29-10-2010, 03:10 PM
At'a boy, yeeah now ya talkin.... it's an addiction! :thumbsup:
A nice 3 dimentionality there, I like it.
Mike
DavidU
29-10-2010, 03:22 PM
Doug, I reckon thats awesome. Very deep & 3D looking.
Alchemy
29-10-2010, 04:02 PM
Very nice so far, there is some nice contrasty detail in the neb itself, it needs some star colors to give it pzaz. Perhaps just do an rgb quickie for them , with a copy and paste stars and feather the colors in. I wouldn't change the rest of the image though
Very good and detailed 3d looking spider there Doug :thumbsup:
And for a quick process it looks super already.
Now we are all waiting for the end result :D
Lester
29-10-2010, 06:08 PM
Beautiful image Doug. The delicate structure is well resolved. All the best.
TheDecepticon
29-10-2010, 08:12 PM
Certainly very nice detail and colour.:D Top stuff.:thumbsup:
Ross G
29-10-2010, 08:58 PM
Hi Doug,
Fantastic photo...the red gives it a real depth.
Ross
Wow, now that's a beauty!!!
Stevec35
30-10-2010, 05:17 PM
I don't think there's going to be much reprocessing required Doug - that's a beauty. The only thing I would do is perhaps up the blue slightly.
Cheers
Steve
peter_4059
30-10-2010, 05:26 PM
Awesome Doug. As the others have already said it is very crisp and 3D looking.
Peter
Astroman
30-10-2010, 05:40 PM
Now thats a beauty!
dpastern
30-10-2010, 09:13 PM
Doug - looks good to me. Nice details! So this was just H alpha and O III, no Luminance data?
Dave
Hagar
30-10-2010, 10:08 PM
Thanks for the kind comments everyone. I've been busy with work and my daughters wedding so haven't spent much time on astro stuff this last couple of weeks. I haven't yet had another look at the data but have a couple of ideas which may improve the core area. I will have another look at all the data tomorrow night on night shift.
Dave, yes it's just ha as the red channel with OIII at about 70% for green and the same OIII at 100% for the blue channel. I have seen images where one or both emmisson lines can be combined and used as a luminous layer after filtering, sharpening etc with photoshop but in this case that is not what I have used, yet anyway.
Thanks again everyone.
Great image Doug, very crisp and clean and lots of depth.
Cheers
dpastern
31-10-2010, 10:06 AM
I have to learn how to do that, sounds pretty cool. Thanks for the explanation.
Dave
Hagar
31-10-2010, 06:11 PM
Not to difficult Dave. I use CCDStack for my blending and mapping to RGB but you can use almost any of the software out there to do the same.
Briefly.
I load the Ha, OIII and a copy of the OIII.
I align all three images.
I create a colour composite using Ha image as red at factor of 1
I use the copy of the OIII as green at a factor of 0.7
I use the OIII as blue at a factor of 1
Hit the create button and hope. Sometimes I have to vary the factors a little depending on the original data then into photoshop for a fiddle.
This might give you some idea how simple it really is.
Hagar
02-11-2010, 08:25 PM
I finally got some time to have another look at this image.
This is just a synthetic lum channel and a little selective sharpening.
What do you think
Oh baby you just nailed that one Doug, lots more visible and more contrast.
Also a bit of green background is gone.
Love it :thumbsup:
desler
02-11-2010, 08:41 PM
Wow, a whole new level there Doug, I just love the core!!!!
Darren
strongmanmike
02-11-2010, 09:37 PM
Looks great Doug it almost draws you in, some great fine details in the fire there too.
Mike
Alchemy
02-11-2010, 09:52 PM
No the first one for me.... I know I'm going against the crowd but...
Its become too contrasty, you've lost some of he subtle tones within the nebula itself, I suspect you wanted to introduce some color into the core buts it's just a colored strip, that doesn't blend in. The original image was a beauty, and as per my earlier thread I felt if youncould change nothing other than introduce some nice star colors you would have a most printable image.
The original was one of the best tarantulas I have seen in a while.
Probably wont make any friends over that comment but there you go.
kinetic
03-11-2010, 07:08 AM
Doug,
I just think the first one is a beauty but I'm not looking at it on a well
calibrated monitor and am no judge of this stuff anyway.
Steve
Hagar
03-11-2010, 02:06 PM
Thanks Marty, A bit of scull duggery to add a luminance layer to this one but I am very happy with the end result. Just stars to come.
Thanks Darren.
Thanks Mike. I did quite a bit of work on both the Ha and OIII masters to lift the detail and get some colour in the OIII of the core and will probably do a bit more when I get some RGB stars to blend through the image.
No Problems Clive. I think there is still a lot of room for improvement but can't do much until I can get some more data on this one. Stars are still coming.
Thanks Steve. I an happy with both images but no2 just has the extra detail I was after.
Paul Haese
03-11-2010, 09:45 PM
I like the first one Doug. Detail is amazing.
Hagar
06-11-2010, 07:16 AM
Thanks Paul, I just added a good sharp lum layer to the first on to try and give it a lift. I was happy with the second one myself but will be happier once i can get some star colour back into the mix.
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