Swan/Lobster/M17 etc

[mill]

Taken last night with the QHY9 on the ED80 (still need to get my 8" reflector sorted).
14X5 Minute Luminance and 8X100 Seconds RGB each.

The color of the Omega Nebula is reddish, with some graduation to pink. This color comes from the hot hydrogen gas which is excited to shine by the hottest stars which have just formed within the nebula. However, the brightest region is actually of white color, not overexposed as one might think. This phenomenon is apparently a result of a mixture of emission light from the hottest gas, together with reflections of the bright star light from the dust in this region. The nebula contains a large amount of dark obscuring material, which is obvious in its remarkable features. This matter has been heated by the hidden young stars, and shines brightly in infrared light.

1Mb pic here: http://i605.photobucket.com/albums/tt137/Martin_Meupelenberg/Nebulae/Swan_done.jpg

Small pic below.

[multiweb]

Beautiful shot Martin. Very detailed and you've controlled the stars really well. :thumbsup:

[mill]

Thank you Marc :) but i am not too happy with the rim around the white stars, especially in the nebula.
Anyone with a tip of how to get rid of that is most welcome to tell me :P

[multiweb]

Ringing can be caused by deconvolution or stacking channels with different star sizes. Usually to deal with it you can duplicate a color layer in PS with a bigger FWHM and use the eraser tool (or paint a mask) with a soft edge to blend in the underlying star that has no ring into your sharper overlaid layer so you just let through want you want to soften up.

[mill]

Thank you very much for the tip Marc :thumbsup:

[Omaroo]

Nice shot Martin! :) Very detailed and nice stars. It's great to have Sagittarius up so high again.

[desler]

Nicely done Martin, Really got that system humming along!

Darren

[mill]

Thank you Chris :) It is a nice area of the sky :thumbsup:



Thanks mate :) Now if the weather would cooperate :D

[Lester]

Wow, you have recorded a heap of nebulosity around the Swan, its almost unrecogniseable.

All the best.

[mill]

Thank you Lester :thumbsup:
The Swan has a potbelly :rofl::rofl:

[TrevorW]

I'm with you Marty more a lobster than a swan check the shot I did last year at my pbase site taken with the 350d, might need to try again with the QHY