A two panel mosaic image of Sh-221 and Sh2-216 (Metsavainio)

A two panel mosaic image of Sh-221 and Sh2-216

Link: http://www.astroanarchy.blogspot.fi/2014/01/sh2-221-supernova-remnant-in-auriga.html

A two panel mosaic image of Sh-221 and Sh2-216

Link: http://www.astroanarchy.blogspot.fi/2014/01/sh2-221-supernova-remnant-in-auriga.html

Two ways to end a life of the star in a same seven degrees field of view!

Total exposure time for this mosaic is 58 hours. Qhy9, Baader narrowband filters and Canon EF 200mm f1.8 full open.

Just next to Sh2-221 locates a closest known planetary nebula, Sh2-216. This is also a very rarely images target, due to its low surface brightness and large angular dimension. This mosaic image covers over seven degrees of sky vertically. (The Moon has an apparent dimension of 0.5 degrees.) Mosaic is made out of my new data of Sh2-221 and an older material of Sh2-216. Some new exposures was taken for the Sh2-216 to match the background for a mosaic image.

Image shows two different ways to end a life of the star. At left, as a Supernova and at right as a Planetary Nebula. (Massive stars will go to a Supernova, after burning out all of the Hydrogen. There will be a Neutron star or a Black Hole left behind. Lighter stars, as our Sun, will turn to a Planetary Nebula, after ran out of Hydrogen. There is a core of the star left behind, it's called a White Dwarf and it will cool down gradually. )

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A two panel mosaic image of Sh-221 and Sh2-216

A two panel mosaic image of Sh-221 and Sh2-216

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Image Index:

Contribution Index (beta):

A two panel mosaic image of Sh-221 and Sh2-216

A two panel mosaic image of Sh-221 and Sh2-216

Equipment

Acquisition details

Description

Comments

Histogram

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