If you had limited funds to build a large telescope, which type would you choose, a refractor or a reflector? Why?
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- All these can be explained by ray optics EXCEPT: a) the resolution of telescope. b) the transmission of signals in fiber optic. c) image reversal in a mirror. d) camera lens.Astronauts observing from a space station need a telescope with a resolving power of 0.5 arc second at a wavelength of 570 nm and a magnifying power of 280. 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.)If a telescope is 10 times bigger in diameter it will gather _________ times more light than a smaller telescope
- 2. Write down the nature of the images for the astronomical telescope, Galilean telescope and the micro- scope. Are the images inverted? Erect? Real? Virtual?Which one of the following would you suggest to an astronomer to best resolve two closely spaced stars? Use a large objective lens and observe using blue light Use a large objective lens and observe using red light Use a small objective lens and observe using blue light Use a small objective lens and observe using red lightwhat three astronomical objects are represented on this excerpted Image 1 from a postage stamp? What are the two rings?