Welcome to Astronomy & Telescope Astronomy



· Home
· AvantGo
· Content
· Downloads
· Encyclopedia
· 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, 8 guest(s) and 0 member(s) that are online.

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




Select Interface Language:


  Random Headlines

[ Accessory ]

·Astronomy: Accessory - SOLAR SYSTEM SIGHTS
·Astronomy: Accessory - FILTERING OUT LIGHT
·Astronomy: Accessory - FINDING THING
·Astronomy: Accessory - EASY POWER
·Astronomy: Accessory - DEWCAPS
·Astronomy: Accessory - CREATURE COMFORTS
·Astronomy: Accessory - THE BEST ACCESSORIES

  Binoculars: Astronomy: Binoculars - Focus-IN FOCUS
Posted on Monday, November 29 @ 02:17:50 CST by astronomy


Waterproof binoculars often have two focus adjustments, one on each eyepiece. These individual-focus models are awkward for daytime use, but are fine for astronomy because every subject is located at infinity, requiring only one focus setting.

Even so, most people prefer to use center-focus models. These have a single focus adjustment that controls both eyepieces, as well as a "set-once-and-forget" adjustment on one eyepiece that compensates for focus differences between your right and left eyes.

In recent years, some manufacturers have sold binoculars that have no focus adjustments. These fixed-focus models are unusable for astronomy. They do not focus at infinity and provide no means to compensate for the focus variations among different people's eyes.




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 Binoculars
· News by astronomy

Most read story about Binoculars:
Astronomy: Binoculars - THE BEST BINOCULARS


  Article Rating

Average Score: 0
Votes: 0

Please take a second and vote for this article:

Very Good



 Printer Friendly Printer Friendly

 Send to a Friend Send to a Friend


Associated Topics


"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