Found Images: 2015 April

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Bernes 149
http://rossg.smugmug.com/ASTROPHOTOS/Co ... dx899PD/X3
Copyright: Ross Giakoumatos

Click to view full size image

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Du 1 and K3-83
http://www.capella-observatory.com/Imag ... Ns/Du1.htm
Copyright: Josef Pöpsel and Stefan Binnewies

The planetary nebula Du 1 was discovered by the French amateur astronomer Pascal Le Dû. K3-83 is the small planetary nebula to the right of it.

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NGC 3631
http://www.astrobin.com/77980/
Copyright: Mark Elvov

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NGC 7713
http://members.pcug.org.au/~stevec/ngc7 ... 3_RC14.htm
Copyright: Steve Crouch

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Milky Way Emerges as Sun Sets over Paranal
ESO Picture of the Week | VLT | 2015 Apr 27

[i]Credit: ESO/[/i][url=http://colosimophotography.com/][b][i]J. Colosimo[/i][/b][/url]

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In this new image dusk reveals a stunning night sky over ESO’s Paranal Observatory, home to the Very Large Telescope (VLT) — the flagship facility for European ground-based astronomy.

As the Sun sets on the site the Milky Way is shown in magnificent detail. Although it appears to the naked eye as a clouded haze across the sky, the Milky Way consists of 100–400 billion individual stars strung out along its 100 000 light-year extent.

In this image the Milky Way is a backdrop to the Unit Telescope number 4, also known as Yepun. Yepun is Venus in the Mapuche language, the language of the indigenous people from the south of Chile.

Yepun is one of four 8.2-metre telescopes that can be used together as one giant telescope, allowing astronomers to detect details up to 16 times finer than would be possible with the individual telescopes. Together, the VLT has stimulated a new age of discoveries, with several notable scientific firsts, including tracking individual stars moving around the supermassive black hole at the centre of the Milky Way (eso0846). ...

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Galactic Refurbishment (UGC 5797)
ESA Hubble Picture of the Week | 2015 Apr 27

[i]Credit: ESA/Hubble & NASA[/i]

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The smudge of stars at the centre of this NASA/ESA Hubble Space Telescope image is a galaxy known as UGC 5797. UGC 5797 is an emission line galaxy, meaning that it is currently undergoing active star formation. The result is a stellar population that is constantly being refurbished as massive bright blue stars form. Galaxies with prolific star formation are not only veiled in a blue tint, but are key to the continuation of a stellar cycle.

In this image UGC 5797 appears in front of a background of spiral galaxies. Spiral galaxies have copious amounts of dust and gas — the main ingredient for stars — and therefore often also belong to the class of emission line galaxies.

Spiral galaxies have disc-like shapes that drastically vary in appearance depending on the angle at which they are observed. The collection of spiral galaxies in this frame exhibits this attribute acutely: Some are viewed face-on, revealing the structure of the spiral arms, while the two in the bottom left are seen edge-on, appearing as plain streaks in the sky. There are many spiral galaxies, with varying colours and at different angles sprinkled across this image — just take a look. ...

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NGC 7090
http://www.pbase.com/david_fitz_henry/image/153991915
Copyright: David Fitz-Henry

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Keenan's System (NGC 5216-8)
http://www.astrobin.com/164920/
Copyright: Tero Turunen

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NGC 2362
http://www.astropilar.com.ar/cumulos/NGC2362_1.html
Copyright: Ezequiel Bellocchio