Eta Carinae now with Ha, OIII added

[sjastro]

One of the "problems" with imaging Eta Carinae in SII luminance is that the longer wavelength of the SII emission can cut through the dark nebulae in the region and reduce contrast in these areas.

By merging separate HaRGB and OIIIRGB images with the SIIRGB image, the dark regions are preserved.

Large image here.
http://members.iinet.net.au/~sjastro...I_SII_rgb.html

Comparison SII luminance image here.
http://members.iinet.net.au/~sjastro/etaSIIc.html

Clear skies

Steven

[atalas]

Nice work Steven.

[sjastro]

Thanks Louie.

Clear skies

Steven

[RickS (Rick)]

Interesting image and ideas, Steven. I started imaging the keyhole area in NB last night since we're finally getting some decent weather. I was surprised how bright the SII was.

Cheers,
Rick.

[Bassnut (Fred)]

Excellent Steven !. Im a little puzzled why the background is so high. The tweak here (low res) only had the level shifted. Theres no data in a flat line left of a histogram. Is your leveling a matter of taste?. No prob if so.

[sjastro]

Originally Posted by Bassnut

Excellent Steven !. Im a little puzzled why the background is so high. The tweak here (low res) only had the level shifted. Theres no data in a flat line left of a histogram. Is your leveling a matter of taste?. No prob if so.

Thanks for the feedback Fred.

I"ll need to invest in a new monitor. Even at maximum brightness images look dark.
I'll need to pay closer attention to the black point.

Originally Posted by RickS

Interesting image and ideas, Steven. I started imaging the keyhole area in NB last night since we're finally getting some decent weather. I was surprised how bright the SII was.

Cheers,
Rick.

Thanks Rick.

Clear skies

Steven

[CoolhandJo (Paul)]

Very nice image

[sjastro]

Thanks Paul.

Steven