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Click the image for a full
size wide field view. (3000 x 1687 - 2.88 MB)
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Instrument |
12.5" RCOS @
~ f/9 (2880 mm fl) at 0.64 arcsec/pixel. Shown at 0.64 and
1.44 arcsec/pixel. |
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Mount |
Paramount ME |
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Camera |
SBIG STL-11000 w/
FW8 filter wheel & AstroDon 6nm Ha and Gen-2 LRGB filters. |
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Acquisition Data |
9/15/2012 to
11/13/2012 Chino Valley, AZ. with CCD Commander & TheSkyX. AOL
guided |
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Exposure |
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Lum |
480 min (16 x
30 min.) Bin 1x1 |
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RGB |
675 min (15 x
15 min. each) Bin 2x2 |
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Ha |
630 min (21 x
30 min. ) Bin 1x1 |
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Software & Processing Notes
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TheSkyX,
CCDStack, PixInsight, Photoshop CS6.
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eXcalibrator
v6.2 for (g:r),(b:r)
color balancing, using 990 stars from the Pan-STARRS database.
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CCDBand-Aid to repair
KAI-11000M vertical bars.
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CCDStack to
calibrate the sub exposures.
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PixInsight
processing includes
CosmeticCorrection,
data rejection, mean combine the sub-exposures,
MureDenoise, create the LRGB
image,
gradient removal and non-linear stretching with HistogramTransformation,
BackgroundNeutralization and StarNet to create a star mask.
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PhotoShop for additional background neutralization,
adding the Ha data
and
JPEG creation.
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Comment
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North is to the top.
IC 10 is an irregular
galaxy in the constellation Cassiopeia, at a distance of about 2.2
million light-years. Lewis Swift discovered the galaxy in 1887. IC
10 lies near the plane of the Milky Way and is greatly obscured by
interstellar matter. This makes the galaxy difficult to study,
despite its closeness. In 1996, IC 10 was finally confirmed as a
member of the local galaxy group. Its galactic latitude of only -3.3
degrees also accounts for the reddened appearance.: |
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