Tuesday, November 29, 2011
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Arcturus (α Boo, α Boötis, Alpha Boötis) is the brightest star in the constellation Boötes. With the naked eye, is seen as an orange-yellow star and has a visual magnitude of -0.04, which is the brightest star in the northern hemisphere and the fourth as brightness in the night sky, after Sirius with a -1.46, magnitude, Canopus -0.86, and Alpha Centauri -0.27. However, Alpha Centauri is a bright binary star, unresolved component whose naked eye are both weaker than Arcturus. This makes Arcturus the third individual star in brightness, just before the Alpha Centauri A (α Cen A), whose visual magnitude is -0.01.
Arcturus is visible on both sides of the planet, and is located less than 20 degrees of north celestial equator. On northern hemisphere, an easy way to find Arcturus is following the Big Dipper's handle bow. In sequel, you can find Spica.
Arcturus is a member of the local interstellar cloud.
Captures of the clips will be posted in another article in the same section, and the results of processing in Registax as well.
Video: Victor Lupu
Optics: Celestron C8 "-Newtonian telescope, plossl 20mm, 2x Barlow
Mount: CG5 (EQ5)
Device: Sony CX105 at 7x optical zoom
Total Magnification: 700x
Resolution: 1920x1080
Bitrate: 16000, FPS: 50
Filter: no
Date:23.03.2011
Location: Baia Mare, Romania
Edit: Video stabilized in Sony Vegas
Posted in: Stars,Stars-Arcturus
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