Carina in full NB

[DJScotty]

Finally some clear skies in Brisbane!!!
Managed to grab 5 hours of 15 minute subs of OIII last night.
Combined with 5 hours of 30 minute SII and 6 hours of 15 minute Ha.
Taken through ED80 with Atik 11000 on AZEQ6
RGB to come this weekend (hopefully)
Full version here
http://www.astrobin.com/148710/
Thanks for looking
DJ Scotty

[Slawomir]

Some nice detail in your image Scott! :thumbsup:

I think your data allows to show even more detail, if you improve star alignment between H,O and S panels. May I ask, what software do you use for processing your images?

Hope we will get more clear nights in Brissy.

[strongmanmike]

That's almost in the (recent) RickS hang on the wall mold huh?

One can play with NB Eta data for daaaays :computer: :bashcomp: :computer:

Good stuff :thumbsup:

Mike

[DJScotty]

Thanks Slawomir! Photoshop CS6. With a few plug ins
Here's hoping

[DJScotty]

Thanks Mike. Your comments are greatly appreciated. I did have a crack at the Hubble palette, but was not a fan.

[RickS]

Yep, interesting colours, Scott! As Slawomir mentioned, it looks like the registration of the colours is not quite right.

Cheers,
Rick.

[Placidus]

Absolutely awesome! I really, really like it. I like that you've got the Gabriela Mistral nebula at top left. Cheers, Mike

[Regulus]

That's a great photo Scott, and the colour palette is very enjoyable.
My favourite nebula, and it almost looks 3D. Well done.

trevor

[alpal]

Hi Scott,
It looks great - very original.
I hope you don't mind?
I opened it in PS5 & the black is clipped on all channels &
the green is slightly offset to the 2 o'clock position.
I think it needs a re-processing to show it off at it's best.

cheers
Allan

[Bassnut]

Whoa, dark art right there. Certainly different. I like the strong odd colour balance. A bit more crafting would match the effort in exposure time.

[DJScotty]

Dear ALPAL, Mike, Trevor, and Fred.

Thanks very much for the kind words and encouragement.

It's the processing which is where I need to work now. Especially the stretching of stacked images.

Once again, thanks everyone!

DJScotty

[Slawomir]

Hi Scott,

After having a closer look at your image, I feel that there is a bit of field rotation that affects registration of the colours. When registering individual images into colour images, and then when combining them into the final image, from my experience, it is important to correct for field rotation, especially with longer sessions, even with an equitorial mount. Not sure how to do it in PhotoShop, but field rotation can easily be corrected for in Nebulosity, and PixInsight does it automatically when registering images.

Also, I will echo Allan's advice; in stretching images, when you move the black point, unless there is a particular reason for doing otherwise, always avoid clipping data- I recall someone somewhere wrote quite wisely- the nightsky is never black :)

Take care
Slawomir

[DJScotty]

Hmmmmmm,

looks like I might have to get hold of PixInsight.

I have heard a lot about it.

Thanks Slawomir!

[DJScotty]

Hmmmm, Just got hold of PixInsight. Adaptive Stretching... WOW!!!

[alpal]

You can also use NASA FITS Liberator for free.
http://www.spacetelescope.org/projects/fits_liberator/

It will stretch the 32 bit FITS files straight off your stacks
with the function you choose.
It does most of the hard work for you &
you can then save the result as a 16 bit Tiff for further processing in Photoshop.

cheers
Allan

[DJScotty]

Thanks Al. Never thought to use that. Been playing with it and seems to do a damn good job.

Cheers mate!:thumbsup:

[alpal]

Thanks Scott,
Just remember to un-tick - flip image.
Tick all the boxes in Mark in preview.
Move the black slider well left of the hump.
Move the white slider past the brightest peak (star).
I like the stretch function x^(1/5) for most pictures = maximum compression.

cheers
Allan

[DJScotty]

You read my mind Al. My next question has just been answered!
:thumbsup:

[alpal]

Oh - & remember - have Photoshop already open -
the picture will load straight into it for you!

[gregbradley]

Very nice. Some striking colours in there. I think the image would improve by getting rid of the green gradient in the background though.

HLVG free plugin would do it if you mask the main neb or layer it in selectively.

Greg.

[sjastro]

Very nice Eta Carinae Scott.

Steven