If you always wondered which reflector telescope to acquire, we are discussing the main features you need to evaluate to assist you to take your decision.
Reflector telescopes use a mirror to collect and focus light emanating from celestial objects for instance those from our own solar system. Since these objects or ‘stars’ are very far away from you, the light rays reaching the earth and your telescope are parallel. These fall on the mirror inside your telescope which has a ‘parabolic’ profile and this facilitates in reflecting the rays to a single point. Hence they have the name ‘reflector telescope’. In addition, unlike Skywatcher refractor telescopes, they do not suffer from chromatic aberration (distortion in color) since all wavelengths get reflected from your mirror equally. Apart from this, reflector telescopes have the advantage of being made in substantial size, they are more affordable than refractor telescopes of same size and since light is reflected rather than passing through, only one side need to be optically perfect. Regrettably, they also have some disadvantages. The optics may get misaligned and they need frequent cleaning. Also, where secondary mirrors, either curved (convex) or plain, are used they may produce glare induced by bright stars.
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