Principle of reflective telescope: Reflective telescope uses a mirror to reflect the light emitted by celestial bodies to the imaging plane to form the image of celestial bodies. The main component of this telescope is a mirror, usually a paraboloid or hyperboloid. When the light shines on the mirror, it will be reflected to the secondary focus and then to the imaging plane. With this principle, reflective telescopes can observe distant celestial bodies with high resolution and spectral sensitivity.
Principle of Refraction Telescope: Refraction telescope refracts the light emitted by celestial bodies to the imaging plane by using lenses to form the images of celestial bodies. The main component of this telescope is a convex lens, which can focus the light emitted by celestial bodies on the focal point and then image it through an amplifier or projector. Refractive telescopes can observe a wide range of celestial bodies, such as planets and nebulae, and are suitable for astrometry and determining the position of the earth.
Generally speaking, the principle of telescope is to use the principle of convex lens or mirror imaging to reflect or refract the light of celestial body to the imaging plane to form the image of celestial body. These principles are widely used in astronomy, earth science, military, aerospace, medicine and other fields.