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SkyandTelescope.com – News Blog – The Big Dipper Adds a Star

13 Dec 2009, 18:54 UTC
SkyandTelescope.com – News Blog – The Big Dipper Adds a Star
(200 words excerpt, click title or image to see full post)

SkyandTelescope.com – News Blog – The Big Dipper Adds a Star.
One my favorite targets for me and for star parties is the optical pair Alcor & Mizar and Mizar is also a binary system itself which is apparent through pretty much any telescope.
Alcor and Mizar
In reality each of the stars in the Mizar pair is a binary making the whole telescopic view a total of 6 stars when you include the star that also shows up in the field-of-view.
Alcor a & b
Recently astronomers at the Palomar observatory were looking for extra-solar planets using near-infrared techniques and discovered that Alcor also is a binary system! That makes a total of 7 stars when you look at that one spot in the Big Dipper. Read more over at SkyandTelescope.com

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