Calculate the magnification, light gathering power and separation power of the 1.5 meter mirror telescope
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Calculate the magnification, light gathering power and separation power of the 1.5 meter mirror telescope.
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- Astronauts observing from a space station need a telescope with a resolving power of 0.4 arc second at a wavelength of 530 nm and a magnifying power of 300. Design a telescope to meet their needs. (State the necessary primary diameter of the telescope, in m, and the ratio of the focal lengths below.) Dtelescope= m Feyepiece Fprimary = What will its light-gathering power be, compared with a dark-adapted human eye? (Assume that the pupil of your eye can open to a diameter of about 0.8 cm in dark conditions.) LGPtelescope LGPeye =The light-gathering power of a telescope is directly related to the area of the telescope's primary mirror. A mirror with four times the diameter of another mirror collects how many times more light as the smaller mirror does in the same amount of time? (Numerical answer only, please.)If a telescope is 10 times bigger in diameter it will gather _________ times more light than a smaller telescope
- What is the angular resolution limit (degrees) set by diffraction for the 224-cmcm mirror diameter telescope (λλ=560 nmnm)?Which of these telescopes that detect visible and infrared light has the largest mirror, that is, the most "light gathering" capability? Hubble Space Telescope, now in low Earth orbit. The Vera Rubin telescope now under construction. in Chile. James Webb Space Telescope, to be launched by NASA and ESA this month. Palomar telescope, in California north of San Diego.What is bandwidth in an optical instrument? How does it relate to resolution and noise in an optical instrument?
- Theoretically (that is, if seeing were not an issue), the resolution of a telescope is inversely proportional to its diameter. How much better is the resolution of the ALMA when operating at its longest baseline than the resolution of the Arecibo telescope?Suppose you want a telescope that would allow you to see distinguishing features as small as 6.5 km on the Moon some 384,000 km away. Assume an average wavelength of 550 nm for the light received. What is the minimum diameter of the mirror (in centimeters) that you could use in the telescope?