Hidden Galaxy - IC342 in HaRGB - not all big galaxies are blue (Paul Ecclestone-Brown)

Celestial hemisphere: Northern · Constellation: Camelopardalis (Cam) · Contains: IC 342

Hidden Galaxy - IC342 in HaRGB - not all big galaxies are blue, Paul Ecclestone-Brown

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Hidden Galaxy - IC342 in HaRGB - not all big galaxies are blue

Revision title: Saturation boost

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Hidden Galaxy - IC342 in HaRGB - not all big galaxies are blue

Revision title: Saturation boost

IC 342 is a galaxy about the same size as the triangulum galaxy, but there is a dustcould between it and us, hence it is not as bright as M33. Also just like the light from the sun at sunset and sun rise,the light from IC 342 suffers dispersion, blue (and less so green) light more than red hence the galaxy doesn;t appear to have much blue in it.

It is still active as you can see from the reinforcement of the red from the hydrogen alpha data

Other images are far more transparent, but I like this vesion as it shows the detail of dust lanes very well

Some people may ask - why the different number of subs for R and G&B filters - well this is because the 6200 sensor is way more sensitive in the gren and blue portions of the spectrum, so less time is needed to gather the same number of phoptons across the spectrum in those areas.....

Also - why no luminance? Because of that sensitivity thing. The luminance filter takes light from the whole visible spectrum, and because of the higher sensitivity of the 6200's sensor to blue and green, the sampling is skewed to blue and green. nincreasing the number of RGB subs compensates for that....

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Title: Saturation boost

Description: more satisfying....

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Hidden Galaxy - IC342 in HaRGB - not all big galaxies are blue

Revision title: Saturation boost

Hidden Galaxy - IC342 in HaRGB - not all big galaxies are blue

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Hidden Galaxy - IC342 in HaRGB - not all big galaxies are blue

Revision title: Saturation boost

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