Welcome to Astronomy & Telescope Astronomy

 
 

  Modules

· Home
· AvantGo
· Content
· Downloads
· Encyclopedia
· FAQ
· Feedback
· Forums
· Journal
· Members List
· Private Messages
· Recommend Us
· Reviews
· Search
· Statistics
· Stories Archive
· Submit News
· Surveys
· Top 10
· Topics
· Web Links
· Your Account
 

  Who's Online

There are currently, 6 guest(s) and 0 member(s) that are online.

You are Anonymous user. You can register for free by clicking here
 

  Search



 

  Languages

Select Interface Language:

 

  Random Headlines


Star
[ Star ]

·Astronomy: Star - STAR COLORS
·Astronomy: Star - STAR BRIGHT
·Astronomy: Star - OBSERVING STARS
·Astronomy: Star - STAR MOTIONS
·Astronomy: Star - DISTANCES
·Astronomy: Star - ANNIE JUMP CANNON
·Astronomy: Star
 

 
  Double Star: Astronomy: Double Star - DOUBLE DEDICATION
Posted on Thursday, December 02 @ 13:57:25 CST by astronomy
 
 
  Double Star

DOUBLE DEDICATION

The first double star ever recorded—Mizar in the Big Dipper— was discovered accidentally in 1650 by the Italian astronomer Giovanni Battista Riccioli. Subsequent discoveries by other astronomers were also accidental. By 1779, enough observations had been compiled to inspire the indefatigable William Herschel (1738-1822) to begin a systematic search for these stellar curiosities.

Two years . later, he had discovered more than 800 new double stars, assessing each pair with a filar micrometer, a device that allowed him to precisely measure the separation and orientation of the components. Later measurements of these stars by Herschel and others revealed that some of them were, in fact, orbiting each other.

The American astronomer S. W. Burnham (1838-1921) kicked off a new age of double-star discoveries in 1873 when he published a list of 81 new pairs he had found with his 6 inch (150 mm) refractor. Over the next four decades, this tireless, sharp-eyed observer discovered an additional 1,340 double stars using telescopes of various sizes. In 1906, his observations were collected in the General Catalogue of Double Stars.

 
 
  Login

Nickname

Password

Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.
 

  Related Links

· More about Double Star
· News by astronomy


Most read story about Double Star:
Astronomy: Double Star - DOUBLE DEDICATION

 

  Article Rating

Average Score: 0
Votes: 0

Please take a second and vote for this article:

Excellent
Very Good
Good
Regular
Bad

 

  Options


 Printer Friendly Printer Friendly

 Send to a Friend Send to a Friend

 

 
 
Associated Topics

Double Star
 
 


 
 
"Login" | Login/Create an Account | 0 comments
The comments are owned by the poster. We aren't responsible for their content.
 
 


 
 
No Comments Allowed for Anonymous, please register
 
 


 
  Astronomy & Telescope Astronomy

All logos and trademarks in this site are property of their respective owner. The comments are property of their posters, all the rest © 2004 by Astronomy & Telescope Astronomy
You can syndicate our news using the file backend.php or ultramode.txt