Nature

New on 500px : Andromeda Galaxy (M31) by smashingshare by smashingshare

The Andromeda Galaxy also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth. It is the nearest major galaxy to the Milky Way.s via Tumblr http://bit.ly/1YWHGsx
Nature

New on 500px : Rosette Nebula ( NGC 2237 ) by Mike O’Day ( http://bit.ly/1NjdiCa ) by MikeODay by MikeODay

Rosette Nebula in Monoceros ( NGC 2237, 2238, 2239, 2244, 2246 )
by Mike O’Day ( 500px.com/MikeODay ).

The Rosette Nebula surrounds a cluster of bright young stars (NGC 2244) and is around 5,200 light years from Earth.

Links:
http://bit.ly/1PCEfzj
http://bit.ly/1VGHLeU

This image ~ RA 6h 31m, Dec 5deg 2′.
Skywatcher Quattro 10″ f4 Newtonian.
Skywatcher AZ Eq6 GT Mount.
Orion Short Tube 80mm guide scope & auto guider – PHD2.
Baader MPCC Mark 3 Coma Corrector (no filter used).
Nikon D5300 (unmodified).
Field of view (deg) ~ 1.35 x 0.90..71 x 30 sec ISO 800.
Pixinsight & Photoshop.
20 December 2015 via Tumblr http://bit.ly/1OzfnW6

Nature

New on 500px : The Jewel Box ( NGC 4755 ) by Mike O’Day ( 500px.com/mikeoday ) by MikeODay by MikeODay

The Jewel Box Cluster in the Crux Constellation ( NGC 4755 ) by Mike O’Day ( 500px.com/MikeODay )

Viewed through a telsecope, John Herschel described the Jewel Box Cluster as “a casket of varioulsy coloured precious stones” – hence the name. The Jewel Box, visible only from the Southern Hemisphere and appearing as a bright fuzzy star to the naked eye, is a cluster of around 100 ( mostly blue giant ) stars approximately 7000 light years from Earth.

Links:

500px.com/MikeODay
http://bit.ly/1VGHLeU

Details:

NGC 4755 – RA 12h 54.5m, Dec -60deg 26′.
Skywatcher Quattro 10″ f4 Newtonian.
Skywatcher AZ Eq6 GT Mount.
Unguided.
Baader MPCC Mark 3 Coma Corrector.
Nikon D300 (unmodified).
Field of view (deg) ~ 1.35 x 0.90.
Combination of 15 images 30 sec @ ISO800.

Registax & Photoshop
24 April 2014 (re-processed Nov 2015) via Tumblr http://bit.ly/1O0P4sx

Nature

New on 500px : Night Sky by MathijsvandenBosch by MathijsvandenBosch

Northern Lights over Canada, shot from an aircraft. via Tumblr http://ift.tt/1NUnEo3
Nature

New on 500px : hyades by DeSelby by DeSelby

“In Greek mythology, the Hyades were the five daughters of Atlas and half-sisters to the Pleiades. After the death of their brother, Hyas, the weeping sisters were transformed into a cluster of stars that was afterwards associated with rain.

As a naked-eye object, the Hyades cluster has been known since prehistoric times. It is mentioned by numerous Classical authors from Homer to Ovid.

In Book 18 of the Iliad the stars of the Hyades appear along with the Pleiades, Ursa Major, and Orion on the shield that the god Hephaistos made for Achilles.

In England the cluster was known as the “April Rainers” from an association with April showers, as recorded in the folk song “Green Grow the Rushes, O”.

The cluster was probably first catalogued by Giovanni Batista Hodierna in 1654, and it subsequently appeared in many star atlases of the 17th and 18th centuries.[13] However, Charles Messier did not include the Hyades in his 1781 catalog of deep sky objects.

It therefore lacks a Messier number, unlike many other, more distant open clusters – e.g., M44 (Praesepe), M45 (Pleiades), and M67.

In 1869, the astronomer R.A. Proctor observed that numerous stars at large distances from the Hyades share a similar motion through space.
In 1908, Lewis Boss reported almost 25 years of observations to support this premise, arguing for the existence of a co-moving group of stars that he called the Taurus Stream (now generally known as the Hyades Stream or Hyades Supercluster). Boss published a chart that traced the scattered stars’ movements back to a common point of convergence.”*

*wikipedia via Tumblr http://ift.tt/1OlchVl

Nature

New on 500px : M42 – Orion Nebula by JamesBillings by JamesBillings

I took this when the moon was about 2/3rds full, so the fainter nebulosity required a lot of processing to pull out. Hoping for some clear nights once the moon retreats! via Tumblr http://ift.tt/1Zsbha3
Nature

New on 500px : The Orion Nebula and the Running Man Nebula by JoelTonyan by JoelTonyan

The Orion Nebula and the Running Man Nebula. This shot is a labor of love. All told, I’d estimate 20 hours of work went into producing this image.

Taken with a TMB92L, Hutech-modified Canon T3i DSLR, Orion SSAG autoguider and 50mm guidescope, and Celestron AVX mount. Consists of 31 300-second light frames, 25 25-second light frames, and 15 5-second light frames, plus darks, flats, and bias frames. Captured with BackyardEOS, stacked in DeepSkyStacker, and processed in Photoshop. via Tumblr http://ift.tt/1PkaD9T