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
Integration: 1.3 hours
Author: Chad Quandt
AstroPhotography of the day by SPONLI 05 June 2014
Rho Ophiuchi is a triple star system located at the southern end of the constellation Ophiuchus near de limit with Scorpius.
The stars are embedded in a large blue reflection nebulosity catalogued as IC 4604 which is mixed with several filaments of dark nebulae. This region is also part of a larger dust and nebulosity region known as the Rho Ophiuchus / Antares complex.
Imaging telescopes or lenses: Sky-Watcher 200/1000 Black Diamond
Imaging cameras: Canon EOS 450D
Guiding telescopes or lenses: Lunatico Astronomia EZG-60
Guiding cameras: ZW Optical ASI120MC
Software: PHD Guiding, Incanus APT – Astro Photography Tool, PixInsight Core 1.8
Accessories: Baader MPCC Corrector de Coma
Dates: May 3, 2014
Frames: 7×600″ ISO1600
Integration: 1.2 hours
Author: Jose Fco. Del Aguila
AstroPhotography of the day by SPONLI 08 May 2014
Image Credit & Copyright: Jiajie Zhang
Fading now as it returns to the outer solar system Comet Lovejoy (C/2013 R1) still graces planet Earth’s sky, a delicate apparition in binoculars or small telescopes. The comet, a relic of the solar system’sformative years, is seen here rising in the morning twilight on January 12 among the stars of Ophiuchus, the Serpent Bearer. Posing near the comet is bright star Alpha Ophiuchi, also known as Rasalhague, from Arabic “the head of the serpent collector”. Of course, the serpentine shape below is the ancient Great Wall of China, along the Panlongshan section northeast of Beijing. Panlongshan is translated as “a coiled dragon”. A moving and fortuitous scene, it was captured with a digital camera and telephoto lens in two consecutive exposures. The exposures were merged to show a natural looking foreground and twilight sky.
NASA APOD 20-feb-2014
The Rho Ophiuchi cloud complex is a dark nebula of gas and dust that is located 1° south of the star ρ Ophiuchi of the constellation Ophiuchus. At an estimated distance of 131 ± 3 parsecs, this cloud is one of the closest star-forming regions to the Solar System.
The bright blue reflection nebula at the top, IC 4604, is associated with the triple star, Rho Ophiuchi. Antares (Alpha Scorpii) is surrounded by a yellow area of nebulosity, IC 4606. Antares is 60,000 times brighter than our sun, and is so large that its disc can be easily measured – if it were in our solar system it would almost reach to Jupiter.
Nikkor 180mm F/2.8 @ f/4.0
85x30s at iso 2000
45x120s at iso 1250
10x240s at iso 1250
Dates: March 14, 2013
Autor: Jan Curtis
AstroPhotography of the day by SPONLI
31 January 2014
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