What telescope needed to have a "contact lens" added?
Hubbel |
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Chandra X-Ray |
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Lovell |
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Glenn Observatory |
What telescope needed to have a "contact lens" added? Hubbel Chandra X-Ray Lovell Glenn Observatory
4) The Chandra X-ray Observatory is a telescope in orbit around the Earth. Assume that Chandra is in a circular orbit at an altitude of about 7.5x10' m above the Earth's surface. (a) What is the speed of Chandra in orbit? (20 points) (b) How long does it take Chandra to complete one orbit around the Earth? (Note: If you do not get an answer for part (a), solve this part assuming that the answer to part (a) is v...
(A) What power contact lens in D is needed to correct the vision of a person who has a near point of 64.0 cm and allow him to see objects 25.0 cm away? __________ D (B) If this person has a normal 8.00% ability to accommodate (increase) the power of his eyes, what is the maximum distance of objects he can see clearly in m with his contact lenses and with totally relaxed eyes? (Assume a lens-to-retina distance of 2.00...
The area of a telescope lens is 7.195 x 10^3 mm^2 A) What is the area in square feet (ft^2)? Enter your answer in scientific notation B) If it takes a technician 47.8 seconds to polish 1.57 x 10^2 mm^2, how long does it take her to polish the entire lens?
Consider the following 4 types of telescopes: 1. Visible light telescope 2. Infrared telescope 3. X-ray telescope 4. Radio wave telescope For each of these telescopes explain/discuss the following points: Give an example of what objects one would observe with this type of telescope. Discuss the location one would need to choose for this telescope. Consider the following options and explain what location is ideal for this telescope and why one would (or need to) choose one location over the...
3. What is the focal length of the corrective contact lens needed by a nearsighted person whose far point is 60 cm? a)-60 cm b)-30 cm c) +30 cm d) +60 cm e) +130 cm 4 An astronaut in trou
(a) A simple telescope demo: We need to build this from scratch. We have an eyeglass lens to get started, which we could use as our eyepiece lens; we would need to buy an objective lens and a cardboard tube (from our favorite online marketplace). Assuming the eyeglass lens is a converging one and has focal length f, what type of objective lens do we need if we would like the telescope to have a magnification factor of 100? What...
1. Determine the diameter D of the smallest telescope needed to resolve an “invisible” gravitational lens with a mass and radius the same as Earth. Assume the lensed object (e.g., a star) is directly behind the lens and is observed at a wavelength of 500 nm. 2. Suppose the Sun turns into a black hole. Ignoring the disastrous climatic consequences that would doom the inhabitants of Earth, how large would the Sun appear in arcseconds if you could “see” its...
THIS IS AN ASTRONOMY QUESTION: Question 1: An observer uses an X-ray telescope with an effective area of 500 cm^2 to search for X-ray emission lines in the spectrum of an accreting neutron star. At the energy of the target line, 6.7 keV, the continuum (arising from accretion) contributes 1.2 × 10^−3 counts/s/cm2/keV. In a spectrum accumulated over a 1 ks observation, the observer measures a total of 162 counts from within a 0.2 keV range centred on the target...
what is T3 in year 10 and IRR. Dark Skies Observatory is considering several options to purchase a new deep-space telescope. Revenue would be generated from the telescope by selling "time and use" slots to various researchers around the world. Four possible telescopes have been identified in addition to the possibility of not buying a telescope if none are financially attractive. The table below details the characteristics of each telescope. An internal rate of return analysis is to be performed....
Question 1: An observer uses an X-ray telescope with an effective area of 500 cm^2 to search for X-ray emission lines in the spectrum of an accreting neutron star. At the energy of the target line, 6.7 keV, the continuum (arising from accretion) contributes 1.2 × 10^−3 counts/s/cm2/keV. In a spectrum accumulated over a 1 ks observation, the observer measures a total of 162 counts from within a 0.2 keV range centred on the target line energy. What is the...