Image Pre-Release: NGC 7023 - Calar Alto

[vicent_peris]

Hi all,

I want to present our lastest work from the Descubre / CAHA / OAUV / DSA collaboration: NGC 7023 - the Iris Nebula. This image was acquired and processed by Jack Harvey, Steve Mazlin and me. Total exposure time is about 23 hours - with 20 min subs - through Baader RGB filters. For the central, 7th magnitued star we made an HDR integration with exposures of 1 min, 5 sec and 0.3 sec.

Here you have the image at 600 pixel wide:



You can see the more information about the image and a full resolution version by following this link:

http://astrofoto.es/Galeria/2011/NGC7023/NGC7023_CAHA_en.html

Direct link to the full resolution image:

http://astrofoto.es/Galeria/2011/NGC7023/NGC7023_CAHA_full.html


This is a truly important work for me because it summarizes the state of some of the techniques that I have been developing throughout the last 10 years. For this reason, along with the image,I've just published a tutorial about processing techniques concerning dynamic range and local contrast. Although it's an advanced tutorial, I think some sections can be easily followed. In this article I describe some techniques that are extremely important for me at this moment. I recommend to take a closer look to the star dynamic range compression section that speaks about the techniques I am using now to restore the Gaussian profile of the stars. Follow the below link to read the article:

http://pixinsight.com/tutorials/NGC7023-HDR/en.html


Hope you like it!
Best regards,
Vicent.

[Enzo De Bernardini]

Impresive!.

[Harry page]

Hi

Many thanks for the tut  More for my little brain to absorb 

And of course a very special Iris many congrates

Harry

[Harry page]

Hi

Just to let you know the mouseovers do not work in IE 8

Fine in firefox

Harry

[georg.viehoever]

Just to let you know the mouseovers do not work in IE 8

I can confirm that. Georg

[Juan Conejero]

Just to let you know the mouseovers do not work in IE 8

I have fixed these problems. It should work fine now even on IE 8/9.

[Jules]

Vicent

A spectacular image, congratulations.

Regards

Julian