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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
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Amazon.com : Sarblue Maksutov-Cassegrain Telescope, Mak60 Telescopes for Kids Adults 750x60mm, Compact Portable for Travel, Beginner Astronomy Telescope with Adjustable Tripod Finderscope and Phone Adapter : Electronics
![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 220,mm 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 220,mm](https://search-static.byjusweb.com/question-images/toppr_ext/questions/421595_3dd363e6ca254d3182d8b1cafaea23f9.png)