Visitors 7490
Modified 29-Mar-13
Created 18-Nov-09
304 photos
Natural colors are composed from narrowband data. Channels are balanced so, that image match to visible spectrum, H-a + 24%S-II=Red, O-III=Green and O-III + 15%H-alpha=Blue.
Images are mainly Red due the dominance of Hydrogen. Ionized Hydrogen glows light at wavelengtht of deep Red,656,6 nm. Principle is about same as in fluorescent tubes but much dimmer.
A study about the Colors: http://astroanarchy.blogspot.com/2009/11/colors-in-astro-images.html
Please, use a full screen and click the image, to see them as large as possible!
Images are mainly Red due the dominance of Hydrogen. Ionized Hydrogen glows light at wavelengtht of deep Red,656,6 nm. Principle is about same as in fluorescent tubes but much dimmer.
A study about the Colors: http://astroanarchy.blogspot.com/2009/11/colors-in-astro-images.html
Please, use a full screen and click the image, to see them as large as possible!
Owl Nebula, messier 97
OWL Nebula, m97
Jones-Emberson 1
Jones-Emberson 1
A Gemini SNR, IC 443, the "Jellyfish Nebula"
Sharpless 261, Sh2-261
IC 1805 closeup
IC 1805 closeup
IC 1805, two panel mosaic
Melotte 15 in IC 1805, the Heart Nebula
© J-P Metsavainio