NGC6888 - Crescent Nebula NB bi-colour

[RickS]

This data was sitting around for a while until somebody on the PI forum asked about colourizing NB bi-colour data so I used it as an example.

Would have been nice to have better data (at the time we were having guiding issues and doing short NB subs) and also some RGB stars. Still, it's a cool object and interesting at long focal length.

Captured at SRO, 27 May - 29 July, 2015

Scope: Ceravolo C300 @ f/9 = 2720mm FL
Mount: AP1100
Camera: FLI PL16803
Focuser: Atlas
Filters: Astrodon
Guiding: Lodestar II / Tak guide scope
Image scale: 0.68 arcsec/pixel
Exposures: 13x1800s + 34x600s Ha, 24x1800s + 24x600s Oiii
Processing: PixInsight 1.8

Acquisition credit: John Kasianowicz, Daniele Malleo, Leonardo Orazi, Rob Pfile, Rick Stevenson and Jerry Yesavage.

Processing credit: Rick Stevenson

High res at Astrobin: http://www.astrobin.com/full/221473/0/

Cheers,
Rick.

[Shiraz]

that's a stunning image Rick :thumbsup: Must look up the forum to find out how you got something with that sort of complex colour palette from bicolour data - impressive

[DJScotty]

That's a great image Rick. Beautiful colour and detail.
Just a little question... if you call 30minute subs short, what is a long sub!? :D

[Rod771]

Wow! That's Bright! Nice one Rick. :thumbsup:

[batema]

Beautiful Rick. Absolutely stunning.

[Paul Haese]

Cracking detail Rick. Nice colour too. Pity we cannot image it from down here. I would think it is fairly faint too?

[h0ughy]

looks like you brain escaped into space ;) i love the shot

[RickS]

Thanks, Ray! I used the brightness of the Ha and Oiii to modulate the hue. Just a cheap trick really but I like the effect on some bi-colour images.



Thanks, Scotty. It was the 600 sec subs that didn't add a lot of SNR. For a while we had guiding problems (turns out that encoders aren't always as wonderful as you would hope.)



Ta, Rod! My usual understated processing :lol:



Thanks, Mark.



Ta, Paul! It gets to 24 degrees above the horizon here in Brisneyland which is not conducive to good imaging. Even worse for you. Ozstronomer and a few others have managed decent captures from SE Qld. It's reasonably bright in Ha but the Oiii shell is quite dim.



Thanks, David. The zombies on IIS are all salivating :D

[strongmanmike]

Awesome colour and detail Rick, always love when that OIII sweep over the top shows so nicely on this beauty :thumbsup:

...those thin bright worms are trying veeery hard to reveal themselves to me buuut you have skiiiiirted the edge of over waveletted/sharpened veeery nicely Ricki ;) :thumbsup:

I agree with Houghy, definitely looks like a brain! :eyepop:

Mike

[cazza132]

Wow - some serious commitment here for such a northerly subject! Very cool with the OIII outer shell - really adds to the 3D effect.

[RickS]

Thanks, Mike! Great to know that my light decon and wavelet sharpening has passed the most stringent tests and is fit for human consumption with only trace amounts of worms :lol:

Cheers,
Rick.

[RickS]

Thanks, Troy. I did cheat and use a scope I share at SRO in California ;)

[strongmanmike]

Maybe I am just getting used to'em.. :question:.. :eyepop: Nooooooo :rundog:

[RickS]

Nah, couldn't happen :)

[LewisM]

Gawd, that's terrible! Did you take it with a Long Perng on an EQ2?

:P

Superb imagery.

[gregbradley]

That's a gorgeous image Rick. I really like that. One of the best images so far this year.

Greg.

[Slawomir]

A delightful image and splendid colours Rick; it is hard to believe that this data comes only from 2 filters.

Your Colour Mask script is clearly a very effective tool in manipulating colours and it should be included in the standard scripts in PI :thumbsup:

[ozstronomer]

Beautiful image Rick, nice blending of the O111 and Ha Data

Geoff

[marc4darkskies]

That's definitely a WOW image Rick! :thumbsup: Very nicely done!

[RickS]

Thanks, Lewis. Processed using the new PI processes ChineseOpticsConvolution and PoorAlignmentFieldRotation :lol:



Thanks, Greg!



Thanks, Suavi. I have some changes to make to the script before Juan will bless it. I should get them done but I know it's going to make additional work for Warren Keller who is including ColorMask in his PI book.



Thanks, Geoff!



Thank you, Marcus.

[E_ri_k]

Mega colourful and vibrant, looks great!
Erik

[codemonkey]

I'm not usually a big fan of this target, but you've really brought it to life here, Rick. Great work.



Aha! That's a great tip, and something I'll definitely be trying out... I've only ever done one bi-colour but I really struggled to bring out decent colour comapred to what I see others doing with the same target.

[Bassnut]

wow, thats just stunning Rick.

[RickS]

Thanks, Erik!



Ta, Lee. Yes, the hue bending trick is worth a try especially if you don't have data from three filters (or the Sii is too weak to use.)



Thanks, Fred!

[Stevec35]

Wow - you've been turning out terrific stuff lately Rick! Another fantastic image!

Cheers

Steve

[RickS]

Thanks, Steve! Good data helps... and all the processing practice :)

[RobF]

"Wow Factor" is definitely off the scale. Fascinating image. No more than 11 out of 10 from me though..... :thumbsup:

[astronobob]

Amazing view Rick, Your images are all ways astounding :cool2: , :evil: , :thumbsup:

[alpal]

Hi Rick,
that's an amazing picture.
You've brought out so many colours with just bi-color data.

cheers
Allan

[RickS]

Thanks, Rob. I appreciate the Spinal Tap score :D



Thanks, Bob!



Thanks, Allan. There's no reason why bi-colour should just be red and blue!

[LucasB]

Super image Rick. The detail is awesome.
Lucas

[RickS]

Thanks, Lucas.

[Leonardo70]

Incredible color Rick ... :eyepop:

All the best,
Leo

[RickS]

Thanks, Leo!