The Giant Metrewave Radio Telescope (GMRT) near Pune has several antennas spread over a region of size about 10 km. Make an estimate of the resolution (in arcseconds) that this telescope is expected to have. How large will an optical telescope have to be to achieve a similar resolution in visible light?
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- justify the expenditure of space telescopes . discuss their ability with gamma and x ray wavelengths .discuss the MECHANISMS OF INTERFEROMETER and ITS APPLICATIONS. Discuss at least 2 scientific experiments/missions that use interferometer.A binary star system has an angular separation between the two stars of 3.2 × 10-5 radians. If 2 = 6.6 x 10-7 m, what is the smallest aperture (diameter) telescope that may be used to resolve the two stars? Write your answer in cm.
- Why are x-ray telescopes all in space, rather than on the Earth?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 =A certain telescope has a 10' × 10' field of view that is re- corded using a CCD chip having 2048 x 2048 pixels. What angle on the sky corresponds to 1 pixel? What would be the di- ameter of a typical seeing disk (1" radius), in pixels?
- These images show one of the large `VLT’ telescopes at the European Southern Observatory’s facility at Cerro Paranal, Chile. The place where the laser beam comes out (seen in the inset photo) is just out of sight off of the top edge of the large photo. Also note that if you look down the telescope tube (in the main photo), you can see the tube’s front-end structure. (T/F) judging from the design and components of this telescope, it is a large refracting telescope. True or False ?For a human eye with a pupil diameter (aperture diameter D) of 0.005 meters, and a focal length of 0.022 meters, there will be a resolution limit due to diffraction at 0.6 microns (10^-6 meters) wavelength. If we space light-sensitive cells on the retina at this spacing, how many retina cells per meter (of retina) are there? cells/meter. Now suppose there are giants which are exactly twice the size of humans in each dimension. So giant eyes have pupils of 0.01 meters, and a focal length of 0.044 meters. How many retina cells per meter should the giants have? cells/meterSuppose 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?
- These images show one of the large `VLT’ telescopes at the European Southern Observatory’s facility at Cerro Paranal, Chile. The place where the laser beam comes out (seen in the inset photo) is just out of sight off of the top edge of the large photo. Also note that if you look down the telescope tube (in the main photo), you can see the tube’s front-end structure. Imagine that this telescope had a flaw similar to the Hubble Space Telescope’s - its light-gathering element was shaped wrong. What problem would this cause for the telescope? Group of answer choices It would not be able to bring rays of light from a distant object to a focus. The imperfect shape would mean that it could focus rays of visible light, but not rays of light of any other wavelength. It wouldn’t be able to gather much light compared to the pupil of a human eye. It would mean that the telescope could only work if placed above the Earth’s atmosphere, like the Hubble telescope.Why do you think the presences of a detector effects the outcome of the Modern Double-Slit Experiment?