Table of contents :

Introduction

Newtonian telescope

Dall Kirkham 200 mm F/4- F/15, Mewlon 210 F/2.9-F11.9 and Mewlon 250 F/3-F15

Gregory 250 mm F/3.2-F/28.4

Cassegrain 200 mm F/4-F/15 and Cassegrain 350 F4.9-F29.2

Celestron "classic" and Edge-HD versions overview

Celestron 8 classic and Edge-HD

Celestron 14

Celestron 14 with optimized Schmidt plate position

Celestron 8 with optimized Schmidt plate position

Celestron 14 classic and Edge HD

CDK 355 mm F3 - F11.8

Barlow lenses

 


 

Celestron "classic" and Edge-HD versions overview :

 

OLSO models :

- C8 Edge-HD model is from [1].

- Celestron "classic" models are from [2].

- C9.25, 11 and 14 Edge-HD models are courtesy from [3]

 

Radius of diffraction limited flat field :

Strehl ratio versus wavelength :

 


 

 

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