APOD: Seagull to Sirius (2016 Dec 15)

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APOD: Seagull to Sirius (2016 Dec 15)

Post by APOD Robot » Thu Dec 15, 2016 5:07 am

Image Seagull to Sirius

Explanation: This broad, beautiful mosaic spans almost 20 degrees across planet Earth's sky. The nebula-rich region lies near the edge of the Orion-Eridanus supperbubble, filled with looping, expanding shells of gas and dust embedded in molecular clouds near the plane of the Milky Way Galaxy. Recognizable at the left is the expansive Seagull Nebula, composed of emission nebula NGC 2327, seen as the seagull's head, with the more diffuse IC 2177 as the wings and body. Some 3,800 light-years away, the wings of the Seagull Nebula spread about 240 light-years, still within our local spiral arm. The bluish light of Sirius, alpha star of Canis Major and brightest star in the night, easily dominates the scene at right but shines from a distance of only 8.6 light-years. Study the big picture and you should also be rewarded with star cluster Messier 41, also known as NGC 2287, not to mention the mighty Thor's Helmet.

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Re: APOD: Seagull to Sirius (2016 Dec 15)

Post by Jimbo Jones » Thu Dec 15, 2016 12:31 pm

Supperbubble? What's for Dinner?

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Re: APOD: Seagull to Sirius (2016 Dec 15)

Post by ignacio_db » Thu Dec 15, 2016 1:30 pm

Bravo, Rogelio! Beautiful composition!

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Re: APOD: Seagull to Sirius (2016 Dec 15)

Post by Ann » Thu Dec 15, 2016 2:13 pm

This is a fantastic image! Thanks, Rogelio! :yes: :clap:

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Re: APOD: Seagull to Sirius (2016 Dec 15)

Post by neufer » Thu Dec 15, 2016 3:05 pm

http://www.reuters.com/article/us-usa-albatross-idUSKBN14308P wrote:

<<Wisdom, a Laysan albatross, at least 66 years old and the world's oldest known breeding wild bird incubates her egg in Midway Atoll National Wildlife Refuge and Battle of Midway National Memorial, Hawaii, U.S. on December 3, 2016. Courtesy Kristina McOmber/Kupu... REUTERS>>
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Re: APOD: Seagull to Sirius (2016 Dec 15)

Post by RJN » Thu Dec 15, 2016 4:34 pm

Jimbo Jones wrote:Supperbubble?
Thanks! Fixed it. - RJN


Re: APOD: Seagull to Sirius (2016 Dec 15)

Post by Visual_Astronomer » Thu Dec 15, 2016 5:07 pm

Visually, Thor's Helmet is the most interesting object in this beautiful panorama. With narrow-band filters, one can see quite a lot of detail contained within its eponymous shape. It is one of my favourite winter targets.