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Click the image for a ~ 55%
size view. (1800 x 1350 - 1.41 MB)
"Mouse Over" view is RGB only
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Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel. Shown at
3.76 and 9.02 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 |
11/1/2015 to 10/7/2016
Chino Valley, AZ with CCD Commander & CCDSoft. |
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Exposure |
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RGB |
480 min. (16
x 10 min. each) binned 1x1 |
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Ha |
360 min. (24
x 15 min. each) binned 1x1 |
RGB ratios are 1.00,
0.94 0.84 |
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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 107 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
top.
Stock 23 (Pazmiņo's
Cluster) is a cluster in the
constellation Camelopardis. The cluster and dark nebulae are
embedded in the extensive nebula Sh2-202. Stock 23 was
originally cataloged by Jürgen Stock and was 'rediscovered' in
1977 by John Pazmiņo. Photometric studies suggest that stock 23 is
simply a random formation and not a traditional open cluster with
related stars.
The arcing dark area,
extending from the cluster, contains nine LDN dark nebulae as
catalogued by Beverly Lynds. |
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