Comet color?
comet Big Mach
http://www.noao.edu/noao/comets/hy/wiynhy.html
"Different physical components making up the comet are represented by different colors in these false color composites: the dusty material is shown as red, water and ice are shown as green, and carbon emission (basically, soot) is shown as blue"
Note "false color", hence it's up to Adam Block.
"Different physical components making up the comet are represented by different colors in these false color composites: the dusty material is shown as red, water and ice are shown as green, and carbon emission (basically, soot) is shown as blue"
Note "false color", hence it's up to Adam Block.
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- Ensign
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Re: comet Big Mach
I doubt anyone will see this message... but the person that replied below
is mistaken. I used broadband RGB filters and I normalized the color
response of the chip/filter system. In this way I take out (most) of the
instrumental bias and the color that you see is approximately what
we would see with our eyes (if they were as sensitive and could integrate as long as the CCD camera).
I did not choose the colors of the comet (or any other pictures I generate). Most comets's comae glow blue/green due to various
gasses that are being ionized (the gas tails are usually very blue). The
dust tail is usually yellow because it is reflected sunlight.
Adam Block
ablock@noao.edu
is mistaken. I used broadband RGB filters and I normalized the color
response of the chip/filter system. In this way I take out (most) of the
instrumental bias and the color that you see is approximately what
we would see with our eyes (if they were as sensitive and could integrate as long as the CCD camera).
I did not choose the colors of the comet (or any other pictures I generate). Most comets's comae glow blue/green due to various
gasses that are being ionized (the gas tails are usually very blue). The
dust tail is usually yellow because it is reflected sunlight.
Adam Block
ablock@noao.edu
PRN wrote:http://www.noao.edu/noao/comets/hy/wiynhy.html
"Different physical components making up the comet are represented by different colors in these false color composites: the dusty material is shown as red, water and ice are shown as green, and carbon emission (basically, soot) is shown as blue"
Note "false color", hence it's up to Adam Block.