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Click the image for a larger
view. (1676 x 1257 - 1.01 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 9.24 arcsec/pixel. |
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Mount |
Losmandy G11 with Gemini L4 v1.0 |
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Camera |
SBIG STF-8300M Self
Guiding Package w/ mono ST-i, using Baader LRGB filters. |
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Acquisition Data |
11/22/2014 to
12/28/2014
Chino Valley, AZ |
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Exposure |
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Lum |
504 min. (72 x
7 min.) binned 1x1 |
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Red |
133 min. (19 x
7 min.) " |
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Green
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140 min. (20 x 7 min.)
" |
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Blue
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168 min. (24 x 7 min.)
" |
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Software |
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CCDSoft, CCDStack,
PixInsight & Photoshop CS6.
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No SDSS stars were
available for color balancing, so a standard image-train
calibration was used, as determined by
eXcalibrator v4.30, and then adjusted for altitude
extinction.
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CCDStack to
calibrate the sub exposures.
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PixInsight
processing includes registration and stacking the sub exposures,
creating the RGB image, gradient repair, the initial non-linear
stretching with HistogramTransformation and MaskedStretch. The
stars were slightly dimmed with MorphologicalTransformation to
better show the fainter areas of the nebula.
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PhotoShop to
create
LRGB image and final touch up.
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Noiseware 5, a
PhotoShop plug-in.
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Comment |
North is to the top.
Nature created this
happy accident, about 450 light years from Earth, in the Taurus
Molecular Cloud. Beverly Lynds included the object in her Catalog of
Bright Nebulae in 1965. She gave it a brightness value of four out
of six, with one being the faintest.
Another notable object in the image is the dark nebula Barnard 207.
Its location of RA 4.076 and DEC +26.33 puts the nebula at the
bottom of the Baby Eagle's "eye." Barnhard described the nebula as a
small elongated black spot. The "eye" seems to match this
description. |
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