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View Full Version here: : Tarantula Nebula HaOIIIRGB


Atmos
29-06-2019, 04:11 PM
After many many many revisits I think I finally have this data set (well two) where I'd like them to be.

Telescopes:
RH200
Sky Rover 130mm

Cameras
QHY163M
Nikon D810

Data
70x300" ISO400 (Sky Rover)
Astrodon 3nm Ha: 44x300" (RH200)
Astrodon 3nm OIII: 60x300" (RH200)

There is oh so many ways of combining narrowband to RGB and depending on how it's done changes the way both Ha and OIII colours turn out. Even the order of some steps changes the colour balance. PixelMath is my friend, it's a good friend that sometimes turns around and slaps you in the face :lol:

It's always a hard decision of whether or not to resolve the core of NGC2070 but I decided to keep the dynamic range. It is a little brighter than I'd originally wanted but it does look too flat otherwise.

Pixel Peeping Link (https://www.astrobin.com/full/412290/B/) for those who you who like surfing around the knots :P

Slawomir
29-06-2019, 04:20 PM
A lovely field of view, nice crisp detail and bold colours :thumbsup:

Was fun exploring the high resolution version, noticed some vermis though and now I want to go :fishing: :lol:

Andy01
29-06-2019, 04:30 PM
BOOM! That's got some punch alright - a bold presentation indeed :eyepop:

Atmos
29-06-2019, 04:47 PM
Thanks Suavi :)



Bold and punch is right up your alley ;) :lol:
Reduced the green in the OIII emission now too. Did a little reading and from what I can find the OIII emission (500nm) is more on the blue side of cyan than the green. Not by a lot.

strongmanmike
29-06-2019, 05:15 PM
Cool Colin, looks like a colour negative.. or even a bit of a hologram :thumbsup:

Mike

multiweb
29-06-2019, 08:01 PM
Very cool palette. Looks like the Vela SNR. :thumbsup:

Atmos
29-06-2019, 09:56 PM
It packs a bit of a lunch Mike ;)



Thanks Marc, it’s like vela but less stringy :lol:

Paul Haese
30-06-2019, 06:56 PM
That is a huge field of this oft imaged target. So many interesting things going on there. Plenty for me to image yet within that field. Colour looks great Colin.

Atmos
30-06-2019, 08:49 PM
I know what you mean! I’ve just got myMewlon 250 up and running tonight so there is a lot of spots in and around the Tarantula Nebula to image at longer focal lengths.

Ryderscope
30-06-2019, 08:55 PM
A bold and splendiferous wide field image to be sure :thumbsup: You are doing well combining all of these different data sources Colin. Nicely done.