Telescopes

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TERMS AND DEFINITIONS
The telescope is a sighting device usually with a magnification greater than unity used for image enlargement or measurement purposes.
It consists of a well corrected objective lens, a reticle at its focal plane and an eyepiece.
When the incoming beam is parallel, the image observed through the telescope is located at infinity i.e at a long distance. This set up in is known as infinity setting.
Similar to collimators, the telescopes can be focused at finite distances.Attaching a draw out tube to the reticle adapter to move the reticle out of the focal of the objective lens, the standard telescope becomes a focusing telescope. Depending on the location of the reticle relatively to the focal plane, it results a real or a virtual image at a finite distance.

 

Terms and Definitions

 

The telescope is a sighting device usually with a magnification greater than unity used for image enlargement or measurement purposes. It consists of a well corrected objective lens, a reticle at its focal plane and an eyepiece. When the incoming beam is parallel, the image observed through the telescope is located at infinity i.e at a long distance. This set up in is known as infinity setting.Similar to collimators, the telescopes can be focused at finite distances.Attaching a draw out tube to the reticle adapter to move the reticle out of the focal of the objective lens, the standard telescope becomes a focusing telescope. Depending on the location of the reticle relatively to the focal plane, it results a real or a virtual image at a finite distance.

 

Construction


The main components of a standard telescope (infinity setting) are:

• Tube mounted objective lens

• Reticle adapter

• Eyepiece

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Standard Collimators
Infinite setting
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Focusing Telescopes
Finite distance settings
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Delivery Kit
The Telescopes are delivered as complete ready-to-work instruments:
• Tube mounted objective lens
• Reticle adapter incl. reticle
• Standard eyepiece, magnification x16
 
Optional items
• Eyepiece with magnifications x10, x12, and x25
• Holders
• Eyepiece micrometers