[jase (Jason)]

Originally Posted by rally

A truly beautiful looking image Jase,

And a nice illustration of the fact that a good final image can also be a function of the skill, effort and black art of post processing.

I am always curious - how did you manage the G2V star in this one.
Even the selection process is something I will yet have to master.

Thanks for sharing.

Cheers

Rally

PS - for White Balance I mean

Cheers Rally. I'm pleased with the results considering the small quantity of data. Really, this target is best acquired through just a luminance - no Ha filtered data, hence I was rather dependant of the results of the synthetic lum to bring the reflection nebulosity through.

Good question, with G2V on rental scopes you typically go by the guidance of the rental operator. Many use Astrodon filters which are seen as easier considering their 1:1:1 colour balance ratios. Operators suggest using these "default" ratios to get you close to the right balance and it does, BUT if you're looking for greater accuracy you need to delve deeper. Rarely are the Astrodon filters a true 1:1:1 ratio on a given optical system. For this image, I didn't acquire any G2V subs, instead I referenced information from the SSRO-S/PROMPT team. They use a couple of 16" RCOS with Apogee U47's and Astrodon filters in Chile. The E2V CCD-47-10 AIMO back illuminated chip in the U47 has near identical spectral response to the Lightbuckets Apogee U42 that has the E2V CCD-42-40 Ceramic AIMO back illuminated chip. Their G2V tests reveal an RGB of 1.11:1.00:1.04 using SAO 163948 8.5 magnitude at altitude 75 degrees. I have also made an assumption that the optical coating between the two RCOS are similar. So there you go, no trickery to obtain these figures, just referenced existing information on hand. Again, thanks for taking the time to check out the image and make comment.

Originally Posted by gregbradley

A sensational image Jase masterfully processed.

Greg.

Thanks Greg. Much Appreciated.

Originally Posted by theodog

Great image jase.
I like the dark dust detail -just a hint of reflectivity.
Well done.

Thanks Jeff. Indeed the dark dust in and around the main complex is interesting. There is a mass of reflection nebulosity around the key feature, however was difficult to extract without more data.

Originally Posted by multiweb

That's a great shot! Reminds me a bit of the trifid.

Thanks Marc. Pleased you liked it.

Originally Posted by RB

Another stunning image Jase !
The high res version is beautiful and I just love the blue hues of the wispy neb on the right up against the rosie Goliath of the Cocoon.

Cheers RB. Yeah, the faint reflection nebulosity adds an extra dimension to the image. The image characteristic reminds me of another image I worked on - The flaming star nebula. Undoubtedly the pinkish hue on the Cocoon is due to much of the reflection nebulosity, compared to the more pronouced deep vibrant reds of Ha emission. Thanks again for checking and the image.

Originally Posted by sjastro

Excellent image Jase.

Steven

Cheers Steven.

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Thanks to all those who have commented. I appreciate the acknowledgement.