Processing Veil Nebula / Procesado de la nebulosa del Velo (NGC 6960)

[kelvinator]

Hello,

This is my first post in this forum. I've been using LE version a long time and recently I've spent a Core version 1.6.

I wonder what would be the main steps to process the West Veil Nebula (NGC 6960) or if there is a processing example of this particular object.

This object is quite difficult to process due to the large central star (Cygnus 52) and the large number of stars that has the background.

I would appreciate any advice for processing.

In the preliminary processing much I think I've saturated the stars. I used the histogram, curves, and convolution. Here you have a preliminary image processing:

http://www.flickr.com/photos/astrofoto/4773954128/in/set-72157623096129893/

Regards,
Luis
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Buenas,

Este es mi primer mensaje en este foro. Llevo usando mucho tiempo la versión LE y hace poco me he pasado a la versión Core 1.6.

Me gustaría saber cuales serían los pasos principales para procesar la nebulosa del velo Oeste (NGC 6960) o si hay algún ejemplo de procesado de este objeto en particular.

Este objeto es bastante dificil de procesar debido a la gran estrella central (Cygnus 52) y a la gran cantidad de estrellas que tiene el fondo.

Agradecería algún consejo para su procesado.

En el procesado preliminar creo que he saturado mucho las estrellas. He usado el histograma, curvas y convolución. Os dejo una imagen del procesado preliminar:

http://www.flickr.com/photos/astrofoto/4773954128/in/set-72157623096129893/

Un saludo,
Luis

[Nocturnal]

Hi,

welcome to the PI forums! I think you did a great job processing that image. My only concern is that the stars look a bit harsh. I would try skipping the convolution and doing some wavelets instead, assuming you want to emphasize structure in the nebula. It's probably worthwhile doing noise reduction on the background before doing the wavelets though. Use ACDNR with a luminance mask to protect the stars and nebula.

[kelvinator]

Hello,

Thanks for the tips, I'll try to process it again with what you said.

Regards,
Luis
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Hola,

Gracias por los consejos, probaré a procesarla de nuevo con lo que me has dicho.

Un saludo,
Luis

[sleshin]

Hi Luis and welcome to PI. I will not pretend to be a PI expert as I am still a relative novice. And there are a lot of nice and very helpful regulars on the forum, like Sander, who will surely offer help. You've made a good start on the image. There are black rings around most of the stars, likely due to deconvolution probably applied without a star mask. I would suggest you create a star mask and then with the mask in place do mild deconvolution. Then again with the star mask in place, stretch with either the Histogram Transform or Curves to brighten the nebula without blowing out the stars. You can also adjust/increase color saturation to taste with curves again with the mask in place. If you haven't discovered Harry's video tutorials, check them out. He has a couple, I think, on creating a star mask.

Hope that helps.

Steve

[kelvinator]

Hello again,

I made a second test using starmask in which the stars and not burned out.
To see what you think:

http://www.flickr.com/photos/astrofoto/4776894912/

Regards,
Luis
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Hola de nuevo,
He hecho un segundo procesado usando la máscara de estrellas. A ver que os parece:

http://www.flickr.com/photos/astrofoto/4776894912/



Un saludo,
Luis

[Nocturnal]

Hi,

I think you may want to fix the URLs

[sleshin]

Definitely improved. You're going in the right direction.

Steve