Author Topic: Wide field of Veil Nebula at 255mm f/4.2  (Read 6801 times)

Offline Philippe B.

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Wide field of Veil Nebula at 255mm f/4.2
« on: 2011 September 15 06:41:46 »
Hello
Here is a classic but fully preprocessed and processed with PI 1.7

QSI-540WSG on FS60 at 255mm f/4.2
JPZ (FS2) mount
Astrodon Ha, OIII and SII in 3nm
Ha = 17 x 20min (bin1x1)
OIII = 11 x 20 min (bin 1x1)
SII = 9 x 20 min (bin 1x1)





Offline Nocturnal

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Re: Wide field of Veil Nebula at 255mm f/4.2
« Reply #1 on: 2011 September 15 06:44:26 »
Well done!
Best,

    Sander
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Offline vicent_peris

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Re: Wide field of Veil Nebula at 255mm f/4.2
« Reply #2 on: 2011 September 15 10:16:26 »
Hi Philippe,

I think this is a remarkable image, at least from the documentary point of view. You brought out extremely well the external H-alpha shell towards the north.

One small note: There is a myth that says that the H-beta emission is just the same as the H-alpha emission but with lower intensity... That's just a myth. Some times you can find completely different structures in H-beta and H-alpha. So putting the H-alpha information as H-beta in the G and B channels is not giving any "real" information to the viewer. A completely different thing would be that you don't want to represent the H-alpha emission as pure red.


Best regards,
Vicent.

Offline Nocturnal

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Re: Wide field of Veil Nebula at 255mm f/4.2
« Reply #3 on: 2011 September 15 10:47:50 »
I'm suspect of all techniques that involve mixing narrow band information. I don't even like mixing Ha with RGB :) I've seen the Hb and Ha thing many times before and I'm no fan. 'Synthetic green' is another one of those things. You can't synthesize non-existent signal.
Best,

    Sander
---
Edge HD 1100
QHY-8 for imaging, IMG0H mono for guiding, video cameras for occulations
ASI224, QHY5L-IIc
HyperStar3
WO-M110ED+FR-III/TRF-2008
Takahashi EM-400
PIxInsight, DeepSkyStacker, PHD, Nebulosity

Offline oldwexi

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Re: Wide field of Veil Nebula at 255mm f/4.2
« Reply #4 on: 2011 September 15 11:10:25 »
Philippe!
This image impresses me very much.
It gives for me a new, detailed and interesting view on an
"old" and usually to short exposed object.
Congratulations. Thats the best Veil i have seen so far.

Aloha
Gerald

Offline pfile

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Re: Wide field of Veil Nebula at 255mm f/4.2
« Reply #5 on: 2011 September 15 20:02:24 »
good god! that's the deepest veil i've ever seen. beautiful work!

Offline Philippe B.

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Re: Wide field of Veil Nebula at 255mm f/4.2
« Reply #6 on: 2011 September 16 00:15:46 »
Thank you very much for your comments


That's right "narrowband-to-real" palette is a big part of "artistic" view I think.
I don't really like the standard HST (SHO) palette for this object.


But, many scientific approch have been done many time, also nice. Why not an artistic way  ;)

Offline sleshin

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Re: Wide field of Veil Nebula at 255mm f/4.2
« Reply #7 on: 2011 September 16 06:54:23 »
Great image, beautifully processed. You've teased out a lot of fine wispy structure not often displayed in this target. Very well done.

Steve
Steve Leshin

Stargazer Observatory
Sedona, Arizona