Tag Archives: dark nebula

Dark nebula SH2-136

f1a0b8806f4b3e625d57fab483f3ea47.1824x0_q100_watermark
SH2-136 is a an illuminated dark nebula, about 1,200 light-years away, towards the constellation Cepheus.  The complex process of star formation create dust clouds of many shapes and sizes.

Imaging telescopes or lenses: Sky-Watcher Newton 8″
Imaging cameras: Canon EOS 550D / Rebel T2i
Mounts: Skywatcher Neq6 pro synscan
Guiding cameras: QHY5
Focal reducers: Sky-Watcher Coma corrector
Software: DeepSkyStacker, PHD guiding, photoshop
Dates: Oct. 4, 2013
Frames: 10×600″
Integration: 1.7 hours

Author: Ivan Jevremovic
AstroPhotography of the day by SPONLI 13 July 2014

Southern Cross and Coalsack Dark Nebula

a9bb6b3372626ed1e330c13ffab65b7d.1824x0_q100_watermark
The Coalsack Dark Nebula (or simply the Coalsack) is the most prominent dark nebula in the skies, easily visible to the naked eyeas a dark patch silhouetted against the southern Milky Way.   The Coalsack is located at a distance of approximately 600 light years away from Earth, in the constellation Crux.  The Coalsack is not present in the New General Catalogue and in fact does not have an identification number (outside of the Caldwell Catalogue, in which it is C99).
In Inca astronomy this nebula was called Yutu meaning a partridge.

Imaging telescopes or lenses: Canon EF 70-200mm f2.8 L (at f/3.2 135mm)
Imaging cameras: Canon 5D Mark II
Mounts: CELESTRON CG5-ASGT
Software: PixInsight, BinaryRivers BackyardEOS, Lightroom
Frames:14x5min ISO800

Author: Cory Schmitz
AstroPhotography of the day by SPONLI
20 June 2014

The Dark Horse Nebula

853fd057cb0576bc9a7e907ce81e6bb8.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-Copyright Chad Quandt
The 
Dark Horse Nebula or Great Dark Horse is a large dark nebula, which as seen from Earth, obscures part of the upper central bulge of the Milky Way. The Dark Horse lies in the equatorial constellation Ophiuchus (the Serpent Bearer), near its borders with the more famous constellations Scorpius and Sagittarius. It is a significant, visible feature of the Milky Way’s Great Rift.
This region of dark nebulae is called Dark Horse because it resembles the side silhouette of a horse and appears dark as compared with the background glow of stars and star clouds. It is also known as “Great” because it is one of the largest (in apparent size) groups of dark nebulae in the sky.

Imaging telescopes or lenses: Canon EF 85 mm f/1.2
Imaging cameras: Canon 60Da
Mounts: Celestron Advanced VX
Guiding telescopes or lenses: Orion 50mm Helical Guider
Guiding cameras: Orion Star Shoot autoguider
Software: Adobe Photoshop CS4, Deep Sky Stacker
Dates: May 27, 2014
Frames: 16×300″
Integration: 1.3 hours
Darks: ~32
Flats: ~16
Bias: ~200

Author: Chad Quandt
AstroPhotography of the day by SPONLI 05 June 2014