Onekilopars QnA
Is the Hubble telescope a reflector or refractor?
Cassegrain reflector Hubble is a Cassegrain reflector telescope. Light from celestial objects travels down a tube, is collected by a bowl-like, inwardly curved primary mirror and reflected toward a smaller, dome-shaped, outwardly curved secondary mirror.
One may also ask why is the hubble space telescope a reflector and not a refractor?
The Hubble Space Telescope objective suffers from this (it is too flat by 2 microns, about 1/50 the width of a human hair) so it uses corrective optics to compensate. The corrective optics intercept the light beams from the secondary mirror before they reach the cameras and spectrographs. Why is a reflecting telescope better than a refracting telescope? Reflecting telescopes have a number of other advantages over refractors. They are not subject to chromatic aberration because reflected light does not disperse according to wavelength. Also, the telescope tube of a reflector is shorter than that of a refractor of the same diameter, which reduces the cost of the tube.
Regarding this, why are reflecting telescopes cheaper?
Cost Advantage Because reflecting telescopes use mirrors instead of lenses made from optical glass, they are less expensive to produce. Lenses are used for smaller telescopes and particularly for observing a point on the Earth's surface. Reflecting telescopes of comparable size cost significantly less to produce. Thereof, can you see planets with a refractor telescope? Best Optics for a Planet Viewing Telescope APO refractors are shorter in length than lower quality achromatic refractors and so are more expensive. They are so much better for viewing planets as the detail they bring out at higher magnification is not subject to chromatic aberrations.
Can you see planets with a reflector telescope?
A small telescope can reveal details on giant planets because of how much light they reflect. Medium and large telescopes will provide views of Venus, Mars, Jupiter, and Saturn, even in light-polluted areas.
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