 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
|
|
Keplerian telescope
A telescope or beam expander formed from two positive elements separated by the sum of their focal lengths. Keplerian telescopes have a focus between the elements, making them ideal for use with spatial filters.
Related category
• TELESCOPE EQUIPMENT AND TECHNIQUES
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)