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Neptune Image 2015/09/25(UT)

Alexander Obukhov

Alexander Obukhov (280mm SC)
I decided to spend one night for color imaging. The goal was to get correct
color of the planet.
I have performed the following to obtain true color: use of dispersion
corrector, background subtraction and setting the color balance with
artificial white field.
In general, as expected, the planet is almost monochromatic. However, the
south side noticeably lighter. And it is lighter only in red and partly
green, so the polar region is whiter.

Celestron C11, 2.5x barlow, Pierro Astro ADC, Baader UV/IR Cut, ASI224MC
4000 frames x 100 ms

[Alexander Obukhov: Moscow Russsia]

ALPO-Japan Latest Neptune Section