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ozstronomer
12-07-2013, 09:13 PM
After a few suggestions from Rick, Andrew and Robin I thought I'd re run this through Pixinsight.

There is now some blue coming and looking a little better IMHO.

Comments/ Suggestions welcome - Geoff


I through I had a chance to grab a week under dark skies over the school holidays.

RGB, 12 x 5min each channel + Darks and Flats with a W.O. FLT110 and Moravian G2-8300 camera.

Not sure if the colour is getting there as other Images I've seen have more blue in the arms.

Comments/ Suggestions welcome

Thanks for looking, Geoff

RickS
12-07-2013, 09:49 PM
Nice work, Geoff! You have some nice detail and decent colour in the stars. Did you do anything to calibrate the colour? If you're using PI, ColorCalibration using the whole galaxy will probably work well (on the assumption that the average colour of the whole galaxy is white). You might need to bump up the saturation as well - use a Luminance mask and curves.

Cheers,
Rick.

allan gould
12-07-2013, 10:08 PM
Looking good so far Geoff. When did you get some clear skies?

ozstronomer
13-07-2013, 07:25 AM
Thanks for the comments Rick and Allan, I'll try out that PI sequence and see how it goes.

Geoff

alocky
13-07-2013, 11:26 AM
Nice image - I think it's probably a more accurate colour rendition than most. If you're using the pixinsight LRGB combine process in the manner recommended, where in the second step you recombine RGB and luminance, you can boost the colours by sliding the saturation slider to the left - this will give the effect you're looking for. I did that and got this (http://www.astrobin.com/43784/B/) slightly oversaturated version that picks out the stellar populations nicely which may be what you're describing?
cheers,
Andrew.

ozstronomer
13-07-2013, 12:06 PM
Thanks Andrew, I see what you mean.
I'll give that a try.

Geoff

Tandum
14-07-2013, 01:06 AM
Needs more colour Geoff.
It's in there.

ozstronomer
15-07-2013, 09:44 PM
Bump

troypiggo
15-07-2013, 09:57 PM
Geoff! Didn't comment first time around (forgot), but that repro is lookin good!

RickS
15-07-2013, 10:16 PM
Yes, looking a lot better, Geoff!

ozstronomer
16-07-2013, 06:56 AM
Thanks Troy and Rick, much happier with the repo

Cheers Geoff

alocky
16-07-2013, 11:55 AM
Lots of blue now! What did you end up doing to bring it out?
Cheers,
Andrew

jase
16-07-2013, 04:36 PM
The repro looks great Geoff. A major improvement. As Robin notes, it does look like there is more data in there that can be tweaked further. Don't be afraid to push the data hard at least in the beginning so that you know what you've got to work with. You can then determine the strengths/weaknesses of the image and work on emphasising the good points and suppressing the bad. Colour looks spot on in the repro. I'd perhaps raise the black point more which will give provide greater colour saturation. If so desired, a light application of a high pass filter around 1.8 pixels will bring out the dark dust lanes more along with making the HII regions pop - needs to be masked to protect the stars. There is probably similar routines in PI. Overall a great result. More please.

pvelez
16-07-2013, 04:45 PM
Looks good

PI is great once you get the hang of it

I find when I push saturation that the stars acquire a yellow cast - you seem to have avoided this though there are quite a few orange ones in there.

Pete

Ross G
16-07-2013, 08:13 PM
Great looking galaxy photo Geoff.

The stronger the colour the better.

Ross.

ozstronomer
16-07-2013, 08:22 PM
Andrew, I started from scratch and reprocessed taking care with colour balance.



Thanks Jase, I'll try out the high Pass filter



Thanks Pete, I'm much happier with the repo



Thanks Ross, I do like the stronger colour as well

RobF
20-07-2013, 10:07 PM
I missed this one Geoff - some nice data - the repro really does it justice.

Rob

ozstronomer
20-07-2013, 10:11 PM
Thanks Rob, finally getting the hang of Pixinsight...sort of:P

allan gould
20-07-2013, 10:17 PM
Big improvement Geoff, you will have to give me lessons at Astrofest.

ozstronomer
20-07-2013, 10:21 PM
I'm no expert Allan, but happy to help :)