 |
|
| 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 |
|
|
Newtonian-Cassegrain telescope
A Cassegrain telescope fitted with a flat diagonal mirror to intercept the converging beam from the secondary and reflect it to the side of the tube. Unlike a standard Cassegrain, the primary mirror does not need a central hole, and the focal position can be arranged to coincide with the declination axis of the mounting to give a stationary observing position.
Related category
• TELESCOPE EQUIPMENT AND TECHNIQUES
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)