November 1, 2014

AstroEvent: Catching the Variations of Beta Lyrae.

For the most part, the heavens beyond the solar system are unchanging throughout a normal human life span. Sure, stars evolve and move about the center of our galaxy, but a student of the universe will scarcely notice this over decades. [Read more...]

Astro-Event: Spot the “Double-Double.”

 

 

Epsilon Lyrae finder chart. (Created by Author in Starry Night).

Epsilon Lyrae finder chart. (Created by Author in Starry Night).

 

 

Looking to expand your star-party repertoire beyond Saturn & Albireo? Let me introduce you to a sure northern hemisphere crowd pleaser, the famous “Double-double” star Epsilon Lyrae in the constellation Lyra. Located about 1 ˝ degrees to the northeast of the bright star Vega, this pair is easily resolved in binocs or by the keen eyed observer. The constellation Lyra lies high to the west during the Fall at dusk. But wait, there’s more; each pair is resolvable via moderate sized telescope into a pair of stars, making for a quadruple system. Now for the geometry of what you are seeing; the system is about 162 light years distant. [Read more...]