Eta Carina Central quickie

[John Hothersall]

SPX350 F4.5, ATK-16HR, Astrodon Ha OIII filters.

Only had an hour to get this over the roof so I did not have time to collimate the scope as I left it too late back in May.

Ha=17x2mins
O3=10x4mins

Bi colour combine with artificial green.

Thanks, John.

[alpal]

That's still nice & sharp - great detail.

[RickS]

Really nice, John, especially for a quickie. The colours are great and the detail is very sharp.

[cventer]

Very nice picture. Well done.

[Ross G]

Amazing detail John.


Ross.

[atalas]

Wow!that really turned out nice John!

[petershah]

nice capture john......i quite like this colour rendition

[multiweb]

Very Hubble like :) :thumbsup: Out of interest did you use Ha(R)HaOiii(G)Oiii(B) to get the green? If yes what ratios? Thanks.

[hotspur]

amazing result!:thumbsup:

[allan gould]

Really interesting and sharp image

[John Hothersall]

Thanks everyone.



Thanks Marc, I use anywhere from 23-30pc O3 with Ha in a layer this was probably 25pc. It seems to give the stars an RGB effect with yellows, whites and blues and Eta turned out orange so this works out well. Adding a separate RGB gives large stars which you don't always want in a busy nebula.

The percentage of O3 used depends how strong O3 data is and it was strong in the central Eta Carina area.

Sorry should be 25pc Ha 75pc OIII for synthetic Green !

John.

[multiweb]

Thanks a lot for the detailled explanations mate. I wish all the top guys took notice and were as forth coming as you are when asked for processing tips. Good on you. :thumbsup::thumbsup::thumbsup:

[RickC]

Great result John, and only 1 hour exposure!, plenty of detail and colour
well done, is this the beginning of a project?

cheers
Richard

[John Hothersall]

Sorry Marc got it the wrong way around its 75pc OIII and 25pc Ha. Layers get confusing in terms of what goes into what as I don't tend to think about it these days much.

John.

[multiweb]

Thanks again John - I've shot a lot of Ha and Oiii over the years but not much Sii. Will revisit some of my old shots and try out your method. :thumbsup:

[strongmanmike]

Interesting colour palette John, different...but kinda grows on ya :question: :thumbsup:

Mike

[SkyViking]

Very nice John, with good resolution and some beautiful colours there. Impressive result for just one hour!

[Regulus]

Really like the depth in this and the colours are very attractive. Nice photo.

[iceman]

Wow, I really loved the colours and contrast in this one. A unique view!

It's now IOTW (http://www.iceinspace.com.au).

Well done John, beautiful image.

[multiweb]

Congrats on that one John and thanks again. :thumbsup:

[kepp]

Spectacular colors in this

[marco]

Congrats also on my side John, amazing colors and great image!
Clear skies
Marco

[John Hothersall]

Thanks for the comments and IOTW, I am so pleased.

Regards, John.

[SkyViking]

Congrats on IOTW John, it's certainly well deserved :)

[allan gould]

Congrats on IOTW - a really good presentation John.