GSC 3588 Starfield
Star colors reflect their temperature: red stars are “cold” and
blue stars are “hot”. The apparent brightness of the star is also a function of
the distance to the earth.
Most bright stars in an astrophotograph saturate the
CCD camera, such that it appears white (i.e. saturated) and with only an outer
ring of color to indicate the type of star.
Very dim stars (i.e. distant stars) do not saturate the CCD camera, and their
color is apparent. However, a typical image has several bright and dim stars,
and it is unusual to have an image having only dim stars.
The region around GSC 3588 is filled with many dim stars and is an opportunity
to have a image of stars that capture their color
without saturation.
Celestron C8 OTA with Hyperstar
lens @ f/2.0
Guiding using SkyWatcher 80mm f/6.25 refractor
Imaging camera: StarlightXpress SXV-M8C
Guide camera: Orion StarShoot III monochrome
Combination of 10 x 3min exposures
Click here for high-res (2240x1680)
image
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2011 Michael Blaber