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Unformatted text preview: Lens size is limited ▪ Reflecting Telescope • Concave mirror focuses light onto the focal plane ◦ Advantages: ▪ No chromatic abberation ▪ Support for the mirror is along the back side so can be huge ▪ Reflector telescopes are cheaper ▪ Lights reflecting off the object, rather than passing through it ◦ Disadvantages ▪ Easy to get off alignment ▪ High maintenance ◦ Focusing ▪ A lens refracts the light into one focal point ◦ Telescope's job is to collect light ▪ The lens bends the light to focus; image appears on a focal plane ▪ Image is recorded ◦ Telescopes are designed to collect photons in a particular band of the electromagnetic spectrum ◦ Different types of telescopes ▪ Radio ▪ Infrared ◦...
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