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Reflecting telescopes differ from refracting telescopes in having?
Reflecting telescopes use mirrors to gather and focus light, while refracting telescopes use lenses. Reflecting telescopes tend to be more compact and easier to support larger apertures, making them popular for professional astronomical research. Additionally, reflecting telescopes are less affected by chromatic aberration compared to refracting telescopes.
What determines the resolution of a ground-based telescope?
If by resolution, you mean the closest pair of stars that can be seen in a telescope, it is purely a function of the size of the mirror/lens. You can calculate it as 134÷D where D is the diameter expressed in mm or 4.5÷D where the diameter is expressed in inches. So for my 12 inch Meade Telescope the resolution is 4.5÷12=0.375 seconds
What type of lens is used in the eyepiece for reflecting telescopes?
A radio telescope is a reflecting telescope, and uses a mirror rather than a lens. Since radio waves are so much longer than light waves, the 'mirror' of a radio telescope is the 'dish' reflector that focuses radio waves onto its antenna, located at the prime focus of the dish.
What does the light gathering ability of a telescope depend on?
A refracting telescope is a type of optical telescope. It was used in astronomical telescopes and spy glasses. Objective lens are used to produce the image.
Differences between reflecting and refracting telescopes?
Reflecting Telescopes -uses a single or combination of curved mirrors to bring light to a focus and make an image.
Reflecting telescopes differ from refracting telescopes in having?
Reflecting telescopes use mirrors to gather and focus light, while refracting telescopes use lenses. Reflecting telescopes tend to be more compact and easier to support larger apertures, making them popular for professional astronomical research. Additionally, reflecting telescopes are less affected by chromatic aberration compared to refracting telescopes.
Why arent refracting telescopes bigger than reflecting telescopes?
If you are comparing the biggest telescopes in each type, that's because a large refracting telescope needs a huge lens, which gets expensive; also, the lens can't be supported, while a mirror can.
What are the major types of optical telescopes?
Ground-based telescopes, and space telescopes. Or: refracting telescopes (main collector is a lens), and reflecting telescopes (main collector is a mirror). Or: Home telescopes (small ones), and professional ones (larger and more expensive).
What is the size of a telescope is expressed in terms of?
The diameter of the biggest lens or mirror that gathers light arriving from space. The diameter can be in mm, inches or metres.
What determines the resolution of a ground-based telescope?
If by resolution, you mean the closest pair of stars that can be seen in a telescope, it is purely a function of the size of the mirror/lens. You can calculate it as 134÷D where D is the diameter expressed in mm or 4.5÷D where the diameter is expressed in inches. So for my 12 inch Meade Telescope the resolution is 4.5÷12=0.375 seconds
Why do astonomers use reflecting telescopes mor often than refracting telescopes?
A lens has to be polished on both sides. Also, a mirror can be supported from the bottom, along all of its surface; a lens that is too large will sag. Finally, a lens absorbs part of the light that passes through it. The largest telescope lens has a diameter of about 1.2 meters; it seems unlikely that any larger telescopes using lenses will be built.A lens has to be polished on both sides. Also, a mirror can be supported from the bottom, along all of its surface; a lens that is too large will sag. Finally, a lens absorbs part of the light that passes through it. The largest telescope lens has a diameter of about 1.2 meters; it seems unlikely that any larger telescopes using lenses will be built.A lens has to be polished on both sides. Also, a mirror can be supported from the bottom, along all of its surface; a lens that is too large will sag. Finally, a lens absorbs part of the light that passes through it. The largest telescope lens has a diameter of about 1.2 meters; it seems unlikely that any larger telescopes using lenses will be built.A lens has to be polished on both sides. Also, a mirror can be supported from the bottom, along all of its surface; a lens that is too large will sag. Finally, a lens absorbs part of the light that passes through it. The largest telescope lens has a diameter of about 1.2 meters; it seems unlikely that any larger telescopes using lenses will be built.
What is better a 60mm or a 70mm telescope?
70 mm. The numbers refer to the diameter of the main lens or mirror; the larger this number, the more light-gathering the telescope is, and also, the higher its resolution will be.70 mm. The numbers refer to the diameter of the main lens or mirror; the larger this number, the more light-gathering the telescope is, and also, the higher its resolution will be.70 mm. The numbers refer to the diameter of the main lens or mirror; the larger this number, the more light-gathering the telescope is, and also, the higher its resolution will be.70 mm. The numbers refer to the diameter of the main lens or mirror; the larger this number, the more light-gathering the telescope is, and also, the higher its resolution will be.
What type of lens is used in the eyepiece for reflecting telescopes?
A radio telescope is a reflecting telescope, and uses a mirror rather than a lens. Since radio waves are so much longer than light waves, the 'mirror' of a radio telescope is the 'dish' reflector that focuses radio waves onto its antenna, located at the prime focus of the dish.
How are reflecting and retracting telescopes different?
A reflecting telescope is different from a refracting telescope because a reflecting telescope uses a concave lens, a plane mirror, and a convex lens. While a refracting telescope uses two lens.
Which optical instrument uses a large concave mirror a plane mirror and a convex lens to gather light focus and enlarge an image?
Astronomical telescopes use a large concave mirror, a plane mirror, and a convex lens in their design. The concave mirror gathers light, the plane mirror reflects it to a more convenient viewing location, and the convex lens magnifies and focuses the image for observation.
What does the light gathering ability of a telescope depend on?
A refracting telescope is a type of optical telescope. It was used in astronomical telescopes and spy glasses. Objective lens are used to produce the image.
Differences between reflecting and refracting telescopes?
Reflecting Telescopes -uses a single or combination of curved mirrors to bring light to a focus and make an image.
