NGC7380 "The Wizard" Alan/ Eddie production

[moocher]

Hello,

After playing with this image and getting nowwhere i decided to let Eddie have a bash... Here is NGC7380 "The Wizard" in "Hubble Palette"

Borg 77ED ART285. Guiding via Guidemaster 66sd and QHY5. Captured via Maxim. Dark/ flats subtarcted. All post processing by Eddie Davies.

8x15 mins Ha

6x15 mins O3

6x15 mins S2

Alan/ Eddie

[Aza]

Very trippy, I like it!

Looks like a crazy wizard.

I will be joining you soon with the narrowband tri colour images, cant wait

Are the halos due to the filters, or due to excessive stretching of the SII and OIII channels?

[moocher]

Abit of both i think Arran.....

Alan/Eddie:)

[barkis]

Wow!, that looks rather Psychedelic.

NB certainly does things to an Image. Makes one notice that's for sure.

Ron.

[Tim]

I'm coming around more and more to these images.

Question, which filter gives the yellowy parts, is that the SII ?

[narrowbandpaul]

yeah, the mustard comes from S2, shows up in compression areas....

like the edge of nebulae

paul

[ollypenrice]

Yes, good stuff. I think a bit of explanation like the compression zones point is worth a lot in narrowband imaging.

Olly

[narrowbandpaul]

i looked up the ionisation energy for oxygen 2+ (OIII). It requires a temperature of around 650,000K.

so the oxygen filtered images certainly highlights the very hot regions, typically found near large stars.

mind you sulphur requires around 100,000K. Perhaps then the compression from the interaction with the interstellar medium heats the material, which allows the sulphur atoms to become singly ionised and emit the S2 line.

so OIII for Hot, S2 for compression.

exactly what we see here in this image, and others...eg cygnus wall, pelican.....

great image

paul