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Old 12-09-2020, 06:11 PM
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alistairsam
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NGC 6559 in Narrowband

Been a while since i've posted anything, slowly getting back into it.

Around 10hrs of data.

Processed in startools.

Higher res here
https://www.astrobin.com/full/2tlr0z/B/
https://www.astrobin.com/2tlr0z/B/

Cheers
Alistair
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Last edited by alistairsam; 13-09-2020 at 03:18 PM.
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Old 12-09-2020, 06:53 PM
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multiweb (Marc)
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That's a very cool palette.
So what order did you use?
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Old 12-09-2020, 07:35 PM
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Quote:
Originally Posted by multiweb View Post
That's a very cool palette.
So what order did you use?
Thanks, it was one of the matrix presets in Startools

HST - Synth L + S2HaO3,
SHO - 40SII + 60Ha, 70Ha+30OIII,100OIII

Cheers
Alistair

Last edited by alistairsam; 14-09-2020 at 02:24 AM.
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Old 12-09-2020, 08:58 PM
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Hey Al, nice work!
Long time no image, good to see you back!
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Old 13-09-2020, 11:25 AM
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Sweet!
Greg
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Old 13-09-2020, 11:34 AM
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Really nice. I haven't seen this object before, thanks for posting !
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Old 13-09-2020, 02:22 PM
Placidus (Mike and Trish)
Narrowing the band

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A very beautiful image. Lots of very fine detail, but also vibrant and interesting.

Quote:
Originally Posted by alistairsam View Post

HST - Synth L + S2HaO3,
SHO - 40SII + 60Ha, 70Ha+30OIII,100OIII
You've totally lost me there. Can you explain that longhand?
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Old 13-09-2020, 03:13 PM
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Quote:
Originally Posted by Placidus View Post
A very beautiful image. Lots of very fine detail, but also vibrant and interesting.



You've totally lost me there. Can you explain that longhand?
Thanks for the comments.

Initial RGB mapping was done in the HST palette - S2HaO3 with the 6:1:3 weighting.
To this, I created a synth lum with weightage based on duration of each filter.
hence - Synth Lum + S2HaO3 ->LRGB

There is an optional "Matrix" modification in startools that provides different blending combinations, one that I chose was
SHO - 40SII + 60Ha, 70Ha+30OIII,100OIII - as R,G,B, because in the compose mode, it processes the three channels in parallel and can blend them in any order and ratio.

I'm no expert, but that's my understanding.

Cheers
Alistair
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Old 13-09-2020, 05:18 PM
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Quote:
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There is an optional "Matrix" modification in startools that provides different blending combinations
I get it now. There is indeed a palette blending/rotation facility in Startools. Cool.
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Old 13-09-2020, 08:37 PM
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Wow, that palette certainly makes the colours jump out and the different areas of the nebula quite distinctive. A feast for the eyes
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