![Reflecting, Newtonian & Cassegrain Telescope | Who Invented the Reflecting Telescope? - Video & Lesson Transcript | Study.com Reflecting, Newtonian & Cassegrain Telescope | Who Invented the Reflecting Telescope? - Video & Lesson Transcript | Study.com](https://study.com/cimages/videopreview/screen_shot_2014-12-13_at_12.15.37_am_136815.jpg)
Reflecting, Newtonian & Cassegrain Telescope | Who Invented the Reflecting Telescope? - Video & Lesson Transcript | Study.com
![D203 F800 Telescope Primary Mirror Objective Lens Group with Secondary Mirror D=203mm Focal Length 800mm Newtonian Reflect|Access Control Kits| - AliExpress D203 F800 Telescope Primary Mirror Objective Lens Group with Secondary Mirror D=203mm Focal Length 800mm Newtonian Reflect|Access Control Kits| - AliExpress](https://ae01.alicdn.com/kf/HTB1wVShanHuK1RkSndVq6xVwpXaY.jpg)
D203 F800 Telescope Primary Mirror Objective Lens Group with Secondary Mirror D=203mm Focal Length 800mm Newtonian Reflect|Access Control Kits| - AliExpress
![Amazon.com : HMANE Telescope Reflector Main Mirror 1600mm with Secondary Mirror 40mm, Newton Reflector Spherical Mirror DIY Astronomical Telescope Mirror Kit, 226SQ59LARZVJE14JMZ8XR : Electronics Amazon.com : HMANE Telescope Reflector Main Mirror 1600mm with Secondary Mirror 40mm, Newton Reflector Spherical Mirror DIY Astronomical Telescope Mirror Kit, 226SQ59LARZVJE14JMZ8XR : Electronics](https://m.media-amazon.com/images/I/31xCoCUuLfL.jpg)
Amazon.com : HMANE Telescope Reflector Main Mirror 1600mm with Secondary Mirror 40mm, Newton Reflector Spherical Mirror DIY Astronomical Telescope Mirror Kit, 226SQ59LARZVJE14JMZ8XR : Electronics
![The Newtonian telescope has flat secondary mirror and a paraboloid or spherical primary mirror | Webel IT Australia The Newtonian telescope has flat secondary mirror and a paraboloid or spherical primary mirror | Webel IT Australia](https://www.webel.com.au/sites/default/files/media/slide/2571/The%20Newtonian%20telescope%20...%20usually%20has%20a%20paraboloid%20primary%20mirror_0_6.png)
The Newtonian telescope has flat secondary mirror and a paraboloid or spherical primary mirror | Webel IT Australia
![Newton Reflective Spherical Mirror D160f1300mm Astronomical Telescope Primary Mirrors Secondary Newtonian Reflector - Lenses - AliExpress Newton Reflective Spherical Mirror D160f1300mm Astronomical Telescope Primary Mirrors Secondary Newtonian Reflector - Lenses - AliExpress](https://ae01.alicdn.com/kf/He8cae95904f942b2af0ded451f7a5f08Z.jpg)
Newton Reflective Spherical Mirror D160f1300mm Astronomical Telescope Primary Mirrors Secondary Newtonian Reflector - Lenses - AliExpress
![Can you adjust a f/7.7 spherical mirror to act like a f/8.0 parabolidal mirror by racking the focus farther out? - Sky & Telescope - Sky & Telescope Can you adjust a f/7.7 spherical mirror to act like a f/8.0 parabolidal mirror by racking the focus farther out? - Sky & Telescope - Sky & Telescope](http://skyandtelescope.org/wp-content/uploads/NewtCut_m.jpg)
Can you adjust a f/7.7 spherical mirror to act like a f/8.0 parabolidal mirror by racking the focus farther out? - Sky & Telescope - Sky & Telescope
![D114 F900 Newtonian Reflection Astronomical Telescope Primary Mirror Secondary Mirror Holder Eyepiece Metal Focuser Accessories - Telescope - AliExpress D114 F900 Newtonian Reflection Astronomical Telescope Primary Mirror Secondary Mirror Holder Eyepiece Metal Focuser Accessories - Telescope - AliExpress](https://ae01.alicdn.com/kf/HTB1yzLOXZrrK1RjSspaq6AREXXa9/D114-F900-Newtonian-Reflection-Astronomical-Telescope-Primary-Mirror-Secondary-Mirror-Holder-Eyepiece-Metal-Focuser-Accessories.jpg)