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Click the image for a larger
view.
(2400 x 1600 1.0 MB)
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Instrument |
12.5" RCOS @ ~f/9
(2880 mm fl) at 0.64 arcsec/pixel. Shown at 0.85 and 1.28 arcsec/pixel. |
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Mount |
Paramount ME |
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Camera |
SBIG STL-11000 w/
FW8-STL filter wheel, AstroDon Gen II LRGB Filters. |
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Acquisition Data |
4/14/2015 to 5/20/2015 Chino Valley, AZ... with CCDAutoPilot5
& CCDSoft. AOL guided. |
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Exposure |
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Lum |
465
min. (31 x 15 min. bin 1x1) |
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RGB |
360 min. ( 8 x
15 min. each bin 2x2) |
RGB ratios are 1.00,
1.06 & 1.29 |
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Software |
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CCDSoft, CCDStack,
Photoshop CS6, PixInsight and Noel Carboni's actions.
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eXcalibrator
v4.36 for (g:r) color balancing, using 96 stars from the
SDSS-DR9 database.
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CCDBand-Aid
to repair
KAI-11000M
vertical bars.
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CCDStack to
calibrate all sub exposures, register and stack the color and create the RGB image.
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PixInsight
processing includes registering and stacking the luminance,
gradient repair, non-linear stretching with HistogramTransformation,
HDRMultiscaleTransform and LRGB creation.
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PhotoShop for the final
touch-up.
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Noiseware 5, a PhotoShop plug-in.
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Comment |
North is to the
bottom. Because of the available guide star, the image looks
better upside-down.
NGC 5792 is a a
barred, ringed spiral galaxy about 94 million light-years away in
the constellation Libra.
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