Witch Hunt for Orion - a photo on Flickriver

Witch Hunt for Orion
Captured over 2 nights from Grand Mesa Observatory, Purdy Mesa Colorado
using the full frame QHY367C one shot color CMOS camera on a Rokinon 135mm
F2 lens stopped down to F4. This is a 2 panel mosaic covering an area from
The Witch head Nebula IC 2118 in the upper left of the image to the Dark
Nebula LDN 1622 in the bottom right and it covers a whopping 15 degrees x
18.5 degrees of sky, big enough for the moon to fit over 550 times.
Total Integration time just over 4 hours

Image capture details
Terry Hancock downunderobservatory.com
Location: GrandMesaObservatory.com Purdy Mesa, Colorado
Dates: December 10,18th 2017
RGB 119 x 1 min, 67 x 2 min
Camera: QHY367C
Gain 2850, Offset 76 with Dark Frames no Flat.
Optics: Rokinon 135mm F2 Telephoto Lens @ F4
Focusing: David Lane's Reveal Focus Filter
EQ Mount: Piggyback on 12" RC, Paramount ME
Image Acquisition software Maxim DL5
Pre Processed in Pixinsight
Post Processed in Photoshop

Dominating the night sky from December through March, the ancient
constellation Orion is one of the most famous star groups in the heavens.
Five thousand years ago, the ancient Sumerians imagined this group of stars
as their legendary hero Gilgamesh. The ancient Greeks associated these stars
with a mighty hunter adorned with belt and sword, holding a westward facing
shield in his left hand and an upraised club in his right. These stars were
even included in the fictional world of J.R.R. Tolkien where they were
called Menelvagor, the "Swordsman of the Sky".
Many of the brilliant blue-white stars that make the constellation Orion so
striking were formed in the last 5 to 8 million years, which makes them
quite young by astronomical standards. Some of these young stars are part of
the "Gould Belt", a tilted ring of bright stars nearly centered on our solar
system. The belt may have formed when a large cloud of gas from outside the
Milky Way smashed into the plane of our galaxy at a shallow angle and
compressed clouds of interstellar gas and dust, triggering the formation of
new stars.

Read more about Orion in our e-book "The Armchair Astronomer" it's cheaper
than a pint of Ale or a Gourmet Coffee
cosmicpursuits.com/astronomy-courses-and-e-books/armchair...

Taken on: April 16, 2018

Tags:

QHY

QHY367C

Astrophotography

Astroimaging

Sky

Space

Cosmos « less

Sets appears in: • Messier Objects • Grand Mesa Observatory more » • QHY367C • The Armchair Astronomer • Orion • Nebula « less

Groups appears in: • Astrophotography - Astronomy - Astrophysics • Space And Weather more » • Deep Space Astrophotography • Amateur Astronomy • BBC Sky at Night and Stargazing Live • Universe Today • QHY CCD Astrophotography • APOD Submissions • Amateur Astro-Photography • Photography is art - La fotografia è arte « less

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