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The faint
Witch Head Nebula is a
reflection nebula located 1,000 light years distant. It is
composed of small dust grains reflecting blue light from the nearby
brilliant star Rigel which locates the right "foot" of Orion (Rigel
is not visible in photo above). If you use your imagination
you should be able to make out the large chin, open mouth and
pointed nose of a wicked witch. Technically, this nebula is
located in the constellation of Eridanus. The faint streak of
an Leonid meteor can be seen streaking through the wicked witch's
chin.
IMAGE DETAILS:
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Date & Location: November 19, 2009 -
Bernville, PA
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Weather: Calm wind, 34F.
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Sky Conditions: Clear with good
transparency.
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Optics: TeleVue TV60is Refractor
(360mm -f/6) with field flattener.
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Filter: Hutech IDAS-LPS (Light
Pollution Suppression)
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Mount: Losmandy G-11 equatorial
with Gemini V4
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Guiding: Orion Solitaire w/TeleVue
NP101is
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Camera: Canon T1i (500D) Hap
Griffin Modified - Baader UV/IR
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Exposure: 47 min (5 x 8 min, 1 x 7
min) @ ISO 800, RAW
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Calibration Frames: In camera dark
frame subtraction
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Processing: Photoshop CS4, Noise
Ninja, NIK
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Comments: Photographed from my back
yard (5.5 limiting magnitude) on a night with very good
transparency. Unfortunately distant light domes begin to
encroach the region of the sky where this very faint object is
located and my 8 minute exposures may have been
overwhelmed with light pollution, thus washing out the signal.
I'd like to try this one again either under very dark skies or
with a longer series of shorter light frame subs.
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