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Old 17-11-2007, 10:20 PM
jase (Jason)
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Join Date: Sep 2006
Location: Melbourne, Victoria
Posts: 3,916
Quote:
Originally Posted by mill View Post
That looks just excellent, well done it is an joy to look at this picture.
Cheers Martin. Appreciate it.

Quote:
Originally Posted by DavidU View Post
Crikey awsome detail, 6 hours !!!
Thanks David.

Quote:
Originally Posted by Ric View Post
Excellent Jase, I'm a big fan of colour mapping in narrowband the colours and details it brings out are superb in my books and your image is a perfect example of this.

I have yet to purchase OIII and SII filters and do my own but looking at your image just made up my mind, I have a holiday bonus coming up and I know where that is going.

Very spectacular.
Cheers Ric. Indeed narrowband imaging adds that extra dimension to the imagination. The palette dictates what you plan to convey in the image. As mentioned, I settled for the SHO pallet (Hubble pallet), but also have a HOS image (Canada-France-Hawaii Telescope – CFHT pallet) which is remarkably different - personally HOS is not all that aesthetic, but what is in the narrowband world when we are trying to display the nebulae characteristics? The Ha data on this object is a killer. Really smooth. Tempting to simply process that alone. I hope you get your filters soon. Despite some of the complexities, I'm surprised their aren't many people in these forums doing narrowband work. I know Fred and Bert do, but not many others. Its an ideal form of imaging urban locations hindered by light pollution. Anyway, thanks for your comments.

Quote:
Originally Posted by Alchemy View Post
As always an incredibly detailed image, i could probably fill a page with the good details, ...... not particularly keen on the red halos around the stars in the centre of the nebula though...... still a stunning image and currently way beyond anything i have yet done.
Thanks Alchemy. Agree, the stars in narrowband images aren't pleasing, but after all, narrowband imaging is about acquiring the specific/narrow wavelengths of nebulosity not about getting pretty stars! Take a look around at other narrowband work and you'll see similar results. There are of course way to deal with this through processing.

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Just in case you thought I made up the title "“Image-Processing Techniques for the Creation of Presentation-Quality Astronomical Images” - you can download the document from my website. Its under the resources section (2.9Mb PDF document). If you're serious about imaging and image processing, it's worth understanding the principles defined in this document. Who knows, you may even learn something

Thanks again.
Cheers
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