![Amazon.com : Maksutov-Cassegrain Telescope 60 with Dobsonian Mount, 60mm Aperture 750mm Focal Length, with Finderscope and Phone Adapter, Tabletop Telescopes for Kids Adults Beginners Astronomy : Electronics Amazon.com : Maksutov-Cassegrain Telescope 60 with Dobsonian Mount, 60mm Aperture 750mm Focal Length, with Finderscope and Phone Adapter, Tabletop Telescopes for Kids Adults Beginners Astronomy : Electronics](https://m.media-amazon.com/images/I/61Yvs5Vf7UL.jpg)
Amazon.com : Maksutov-Cassegrain Telescope 60 with Dobsonian Mount, 60mm Aperture 750mm Focal Length, with Finderscope and Phone Adapter, Tabletop Telescopes for Kids Adults Beginners Astronomy : 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
![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
![A Cassegrain telescope uses two mirrors as shown in above figure. Such a telescope is built with the mirrors 20 mm apart. If the radius of curvature of the large mirror is A Cassegrain telescope uses two mirrors as shown in above figure. Such a telescope is built with the mirrors 20 mm apart. If the radius of curvature of the large mirror is](https://haygot.s3.amazonaws.com/questions/421595_3dd363e6ca254d3182d8b1cafaea23f9.png)