tricolor emission line M8 using wavelength ordered palette

[ptc]

taken using the AP180EDT f/9 with 0.75x telecompressor and IMG6303E with 3nm Custom Scientific [SII]/Ha/[OIII] filters

total exposure time is 4H40M

http://www.narrowbandimaging.com/m8_ap180_6303_s2hao3_page.htm

shot from the backyard from the suburbs of the light polluted San Francisco bay area

One thing about the tricolor emission line method is that you have to generally attenuate the ha and find a way to boost the [SII] and [OIII] in order to get the maximum usage of the available color gamut. otherwise the image is dominated by hydrogen and turns green.

[multiweb]

:eyepop: Fantastic shot Richard! Inspirational. :thumbsup:

[Garyh]

Brilliant Rich! don`t know about the tricolor emission line method? but you have a beautifully rendered palette of all the mapped narrowband spectrum.
Well done!

[renormalised]

They're the same thing, Gary, just a different way of saying them:):)

Nice shot, Richard:)

[ptc]

that's right

when I first developed this method back in the early 2000s I didn't call it that. But really that is what it is generically. It is tricolor emission line imaging. I don't think the term "mapped color" is very precise: even RGB imaging is "mapped color": you "map" Red filtered data to the Red channel and so on. So to be as descriptive as possible and to avoid ambiguity, I have settled on "tricolor emission line"

likewise I have adopted the name "wavelength ordered palette" instead of "Hubble palette", which I coined many years ago, because it is more precise and less ambiguous and better describes the palette.

you can do what you want, but I like to set the record straight from time to time....