NGC6589 and NGC6590

[Paul Haese]

Taken over 5 nights this image is a bit incomplete and for several reasons. The first of which is the luminance is a bit short for my liking and still has a bit of noise in the darker areas. The second is there is a star just outside of the field on the top right that is causing a flare and that has spoiled the shot a bit. And; finally some of the stars are not registered properly. I don't know why but every now and again I get this problem with my star images. I have tried several different methods to eliminate the problem but I cannot seem to get it all out completely. It is a minor thing but annoying to my eye.

There many fine images of these objects out on the net and there was plenty of inspiration to give me guidance. I am not 100% happy with the colour, but I have been tossing and turning for a few nights and this is about the best mean fit. Perhaps it suits others too.

Composed of 10.6 hours of integration with LHaRGB data. Colour and luminance subs are 20 minutes in length and Ha is 30 minutes in length.

Click here (http://paulhaese.net/NGC6589&NGC6590.html) for larger resolution image.

[Slawomir]

Hi Paul,

I think it is a fine image of a surely challenging DSO.

I see what you mean about star registration. I am not sure if that would solve your problem, but PI has very neat and IMO powerful star alignment mechanisms, even allowing for correction of localised image distortions.

[PRejto]

I think it looks quite good Paul. It's colourful and smooth. I don't see the registration issue....I wish I could get things as tight as you do! Must be your great seeing and "obsession" with focusing. It certainly pays off!!

Peter

[Rex]

Awesome result Paul. I simply love the star colours in your images. I see the registration issue you mentioned and the flare, but I didn't find either bothersome. A great example of what appears to be a very challenging object.

[gregbradley]

Great image Paul. I must be missing it as I don't see much of a registration issue. Perhaps a little bit of blue or green edging on a few. Hard to say.

I like the star field its nicely done and the red Ha areas are well processed.

Greg.

[Stevec35]

Nicely done Paul. I think the registration problem is pretty small but you are a perfectionist.

Steve

[topheart]

Thanks for sharing this very nice image!

Cheers,
Tim

[rustigsmed]

looks really nice Paul, really sharp but delicate; you don't really notice the registration unless you're going looking for them. thanks for sharing. it must be a faint target.

[Placidus]

Excellent as it stands.

[marco]

Lovely image Paul, I really like the way you managed to keep the overall looking natural and yet deliver plenty of details! Color balance as usual is top notch, well done!

Clear skies
Marco

[Paul Haese]

Thanks Slawomir, a few guys I know use PI specifically for registration purposes. I figure it has something to do with very slight image scale changes due to focus. Most often red is the offending channel.



Hi Peter, the seeing certainly helps, my guiding on that scope is less than 0.1 of pixel generally and yes my obsessiveness on other things such as focus must be paying off. :)



Thanks Rex. Star colour can be hard to manage sometimes. I have found the more colour data I have the easier I can manage star colour.



Thanks Greg, it is not much but enough to erk me. Need to look at something else for a bit and process something else.



Thanks Steve, yep perfectionist does describe me. Little stupid stuff like that bothers me. :)



Thanks Tim



Thanks Russell, yes quite faint target. It must be a very dense regions of space given that it appears there is very little open space present. The darker stuff is quite faint.



Thanks Mike.



Thanks Marco, the hard part is to not over do the darker regions or boost the contrast too much I think.

[jase]

I enjoyed that Paul. Image appears balanced and you've got the golden star cloud hues going on. As you say a slight registration misalignment but its not distracting. If they bother you, go in with the burn tool on the green layer subdue the misalignment. Sometimes, its more hassle than its worth. IC1283-84 are quite pink due to the combination of HII and blue light reflected dust in the area. Its not easy to convey as the Ha data can be overpowering. You've managed that aspect well. I like what you've put together. Good job.

[Paul Haese]

Thanks Jase. I had not considered using the burn tool. Thanks for the tip.

[RickS]

Nice image of what looks to me like a curious prawn :)