Deep Sky
Betelgeuse
(Alpha Orionis)


Constellation: Orion
Betelgeuse
(Bet' l 'jooz)
 The first star I learned as boy.  It is the 8th brightest star in the night sky, and second to Rigel in the constellation. 
Betelgeuse, is classified as a red supergiant, type M21ab, meaning it is one of the largest and most luminous of the observable stars, only aboutr 640 light-years away from us.  Astronomers are not sure of Betelgeuse’s mass though.  Anywhere from 5 to 30 times of our sun, its absolute magnitude is about -6.02.
Living fast and dying young, compared to our sun, Betelgeuse is a youngster only about 10 million years old.  It had a hard youth, having been ejected from its birthplace in near the Orion’s belt, Betelgeuse is running away at supersonic speed, some 30 km a second.  This is fast enough to create a bow shock some 4 light-years wide.
Astronomers believe that Betelgeuse will  go supernova within the next million years.

Note:  According to Bob Berman, Astronomy Magazine, Oct 17 issue, pg 10.  The spelling Bet'l'jooz, is Sumerian.   They saw Betelgeuse as "the arm-pit of the sheep", as the constellation struck them as a sheep & not a hunter.  Gotta love those Sumerians!
3 Images stacked
5 sec ea
Date: 04-29-13
Telescope: Celestron 8"
Schmidt-Cassegrain
10 Images
5 sec ea
Date:: 03-27-16

Telescope: Celestron 8"
 Schmidt-Cassegrain