IC2944 in Hubble pallette

[vic4loc (Victor)]

It started off with beautiful clear skies in Sydney 2 nights ago, but as usual, clouds rolled in around 11pm and spoiled the night

Taken with FSQ106 and QSI583, only managed a few subs

Ha: 2x10mins
SII: 1x10mins
OIII: 1x10mins

Will need a lot more subs to get rid of the grainy background noise.


Victor.

[rogerg (Roger)]

Interesting to see results from such filters with so few exposures, thanks for sharing.

The colour is great, the halo around the bright stars is distracting (but I wouldn't know if it should be there or not, I haven't worked with narrowband filters etc.)

[vic4loc (Victor)]

Yeah I didnt like that huge halo as well. The stars from SII & OIII subs are much bigger than the Ha subs, I'm still learning how to process and reduce star bloats, obviously not doing very good job yet

Victor.

[rogerg (Roger)]

Originally Posted by vic4loc

Yeah I didnt like that huge halo as well. The stars from SII & OIII subs are much bigger than the Ha subs, I'm still learning how to process and reduce star bloats, obviously not doing very good job yet

Victor.

I certainly wouldn't say "not doing a very good job yet" ... combining multi-filter images is a nightmare for me I haven't got the hang of LRGB We seem to have very high standards these days, I think your result is great progress

[Meru (Michael)]

Hi Victor,

That's a great job considering you had such little subs! Your processing is very good What was your work flow? And did you combine the images with Ha:OIII:S -> R:G:B or did you do Ha:Ha:OIII:S -> L:R:G:B?

[vic4loc (Victor)]

I used Maxim LE to combine the subs. Initially I combined using RGB only with SII:Ha:OIII -> R:G:B. Due to the good Ha subs, the green was overwhelming, so I combined using LRGB with Ha:SII:Ha:OIII -> L:R:G:B. I trial & error alot with each of the channel weighting, eventually settled with R:G:B to 1.5:0.8:3.0

After that I did a lot of processing in PS to reduce star size, played around with level/curves/brightness/contrast, colour/channel balance, minimum filter, dust & speckle, Gaussian blur etc.. until I'm happy with the result.

Victor.

[Meru (Michael)]

Ahhh so thats how you got that colour palette! I had a feeling you had used Ha as the L channel. Thanks for the info I wish I knew how to use Maxim to stack RGB, I still use PS to do that

[multiweb (Marc)]

Very nice color blend.

[Ross G]

Nice looking photo Victor.

Sharp and detailed.

Ross.

[RobF (Rob)]

Yep, colours are very pleasing.