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Click the image for a 50%
size view. (1675 x 1257 - 1.38 MB)
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Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel. Shown at 4.2 and 9.39 arcsec/pixel. |
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Mount |
Paramount MyT |
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Camera |
SBIG STF-8300M Self
Guiding Package w/ mono ST-i, using AstroDon E-Series RGB and
Ha filters. |
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Acquisition Data |
8/7/2016 to 8/13//2016
Chino Valley, AZ with CCD Commander & CCDSoft. |
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Exposure |
|
RGB |
1140 min. (38
x 10 min. each) binned 1x1 |
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Ha |
600 min. (40
x 15 min. each) binned 1x1 |
RGB ratios are 1.00,
1.04, 0.98 |
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Software |
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CCDSoft, PixInsight & Photoshop CS6.
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eXcalibrator v5.0 for
(g:r)
color balancing, using 248 stars from the APASS database.
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PixInsight
processing includes calibration, registering, stacking, RGB
creation, gradient removal, non-linear stretching
with HistogramTransformation .
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PhotoShop for
adding the Ha data and the final touch up.
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Comment |
North is to the
right.
Sh2-82 is a
combination of emission and reflection nebula in the constellation
Sagitta, at a distance of about 3,590 light years. it is sometimes
called "Little Cocoon" or "Little Trifid" nebula. |
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