RCOS 16" RC at f/8.4
SBIG STL 11K
Astrodon Series I LRGB filters
LRGB:
L= 15 min x 10, 1x1
R= 15 min x 6, 1x1
G= 15 min x 6, 1x1
B= 15 min x 6, 1x1
RCOS 16" RC @ f/11.3
Apogee U47 for imaging
SBIG 402 for guiding
Astrodon LRGB filters
LRGB:
L= 15 min x 22, 1x1
R= 15 min x 10, 1x1
G= 15 min x 10, 1x1
B= 15 min x 10, 1x1
M83 in Hydra is also known as
the Southern Pinwheel Galaxy.
This image represents the
processing of 20 hours of data
obtained at New Meixco Skies
and CTIO (Chile). The New
Mexico data served to
showcase the wide field of stars
around the galaxy, but since
M83 never rises too high in the
north, the resolution was poor
for the galaxy per se...Enter the
data from Chile, where M83
rises quite high, and the seeing
conditions were good/excellent
for the luminance imaging
(FWHM of about 2.0".) However,
since the equipment down south
only yields a field of view of
10x10' -- barely showing the
bulk of the galaxy -- the
resultant image was layered
over the larger template from
New Mexico. As with any hybrid
image, the challenge is to make
it look homogeneous, without
shifts in color, brightness,
contrast, or noise level between
the various components.
M83 -- click on image to enlarge