DSLR Rosette in SHO Palette (Tony Licata)

DSLR Rosette in SHO Palette

Using the Astronomik 12nm Clip set and my T3i, this is a total of 12 hours Hα (which also carries luminance)+ 6 hours OII + 4.2 hours SII data. That's a total of 22 hours of exposure time.

I decided to map this as SHO, (Sulpher II, Hydrogen α, Oxygen III). I think this is called "Hubble Palette", but correct me if I am wrong. The exact percentages I used per channel are:

R = 0.3 Hα + 0.7 SII

G = 0.2 OIII + 0.6 Hα + 0.2 SII

B = OIII

I have never done this kind of color mapping before. At best I have augmented true color images with NB, which is my preference. That said, I am happy with how it turned out given the fact that I am not using a cooled camera, which I have stubbornly held off from buying.

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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