![In a reflecting telescope (Cassegrain), is there a difference between using a concave or convex secondary mirror? - Astronomy Stack Exchange In a reflecting telescope (Cassegrain), is there a difference between using a concave or convex secondary mirror? - Astronomy Stack Exchange](https://i.stack.imgur.com/n80ol.jpg)
In a reflecting telescope (Cassegrain), is there a difference between using a concave or convex secondary mirror? - Astronomy Stack Exchange
![Schmidt Cassegrain Telescope, Specola Vaticana Observatory, Castel Gandolfo (Italy Stock Photo - Alamy Schmidt Cassegrain Telescope, Specola Vaticana Observatory, Castel Gandolfo (Italy Stock Photo - Alamy](https://c8.alamy.com/comp/PF5NFX/schmidt-cassegrain-telescope-specola-vaticana-observatory-castel-gandolfo-italy-PF5NFX.jpg)
Schmidt Cassegrain Telescope, Specola Vaticana Observatory, Castel Gandolfo (Italy Stock Photo - Alamy
![Amazon.com : Maksutov-Cassegrain Telescope for Adults Kids Astronomy Beginners, Sarblue Mak60 Catadioptric Compound Telescope 750x60mm, Compact Portable Travel Telescope, with Tabletop Tripod Carry Bag : Electronics Amazon.com : Maksutov-Cassegrain Telescope for Adults Kids Astronomy Beginners, Sarblue Mak60 Catadioptric Compound Telescope 750x60mm, Compact Portable Travel Telescope, with Tabletop Tripod Carry Bag : Electronics](https://m.media-amazon.com/images/I/71tHZZYuYuL.jpg)
Amazon.com : Maksutov-Cassegrain Telescope for Adults Kids Astronomy Beginners, Sarblue Mak60 Catadioptric Compound Telescope 750x60mm, Compact Portable Travel Telescope, with Tabletop Tripod Carry Bag : Electronics
![Amazon.com : Maksutov-Cassegrain Telescope, Mak70 Telescopes for Adults Kids 1000mm Focal Length 70mm Objective Lens, Beginners Astronomy Telescope with Slow Motion Gimbal Tripod : Electronics Amazon.com : Maksutov-Cassegrain Telescope, Mak70 Telescopes for Adults Kids 1000mm Focal Length 70mm Objective Lens, Beginners Astronomy Telescope with Slow Motion Gimbal Tripod : Electronics](https://m.media-amazon.com/images/I/6181U-bM8EL._AC_UF894,1000_QL80_.jpg)
Amazon.com : Maksutov-Cassegrain Telescope, Mak70 Telescopes for Adults Kids 1000mm Focal Length 70mm Objective Lens, Beginners Astronomy Telescope with Slow Motion Gimbal Tripod : Electronics
![In a reflecting telescope (Cassegrain), is there a difference between using a concave or convex secondary mirror? - Astronomy Stack Exchange In a reflecting telescope (Cassegrain), is there a difference between using a concave or convex secondary mirror? - Astronomy Stack Exchange](https://i.stack.imgur.com/j0i4Y.jpg)
In a reflecting telescope (Cassegrain), is there a difference between using a concave or convex secondary mirror? - Astronomy Stack Exchange
![Nanomaterials | Free Full-Text | Design and Numerical Analysis of an Infrared Cassegrain Telescope Based on Reflective Metasurfaces Nanomaterials | Free Full-Text | Design and Numerical Analysis of an Infrared Cassegrain Telescope Based on Reflective Metasurfaces](https://www.mdpi.com/nanomaterials/nanomaterials-11-02904/article_deploy/html/images/nanomaterials-11-02904-g001.png)
Nanomaterials | Free Full-Text | Design and Numerical Analysis of an Infrared Cassegrain Telescope Based on Reflective Metasurfaces
![Reflecting Telescope | Definition, Advantages & Disadvantages - Video & Lesson Transcript | Study.com Reflecting Telescope | Definition, Advantages & Disadvantages - Video & Lesson Transcript | Study.com](https://study.com/cimages/multimages/16/640px-cassegrain-telescope.svg3933630929878439620.png)