Why IR telescopes require external cooling
Q: How does the resolving power of the Mount Palomar 5-m telescope compare with that of the 2.4-m…
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Q: What is the diffraction limit of a 4 m telescope observing light at 550 nm? Answer in arc seconds
A: diameter of telescope(D)=4m wavelength(λ)=550nm=550×10-9 m formula diffraction limit(θ)=1.22λD
Q: The blackbody emission spectrum of object A peaks in the ul- traviolet region of the electromagnetic…
A: A blackbody is a hypothetical body that is capable of absorbing all the radiation that falls on it.…
Q: When would an infrared telescope most likely be used?
A: An infrared telescope will detect and resolve the infrared rays. Since the wavelength of the…
Q: The SST's planned operating temperature is 5.5 K. At what wavelength (in micrometers, μm) does the…
A: A blackbody is used to model objects that radiate energy. A black body is an ideal object capable of…
Q: The South African Large Telescope has an aperture of 10.2 meters and was made to observe visible…
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Q: A powerful telescope can observe an object down to about the 30th magnitude in the B-band. To what…
A: Given:- A powerful telescope can observe an object down to about the 30th magnitude in the B-band.…
Q: Why would radio astronomers build identical radio telescopes in many different places around the…
A: Concept: Astronomers use radio telescopes to investigate areas of space. In astrophysics,…
Q: How much larger than a 1-m telescope would another telescope have to be in order to have 1000 times…
A: The light-gathering power of a telescope is defined as the amount of light it can gather and then…
Q: Why must most infrared telescopes operate at very high altitudes or in space?
A: We are well aware most of the objects near the earth's surface and even the atmosphere absorb and…
Q: If the atmosphere were twice as thick as it currently is (extending farther into space), what effect…
A: If the atmosphere were twice as thick as it currently is ( extending farther into space ) , the sky…
Q: Why infrared telescopes are kept above the atmosphere and require extra cooling ?
A: The infrared region of the electromagnetic spectrum covers wavelengths from 0.7 to 100 µm.…
Q: What is the wavelength of maximum intensity (in nm) and the total energy emitted (in J/s/m2) by a…
A: The temperature of the celestial body is given to be 7K. In case of a celestial body which we…
Q: What are the arguments for building the TMT telescope?
A: TMT telescope is an abbreviation of The Thirty Meter Telescope. This telescope is very large…
Q: At what wavelength does the human body emit most of its light? (Assume body temperature is 98.6…
A: λ=b/T b=2.89*10-3 m-K T(in kelvin)=(32°F − 32) × 5/9 + 273.15 = 310.15 K λ=0.00289/310.15 =…
Q: Compared to wavelengths of visible light, the wavelengths of Ultraviolet light are
A: Shorter
Q: Give a list of atleast five radiations in order of their increasing wavelengths.
A: If a radiation have highest wavelength, then its frequency is lowest.
Q: Based on what you know about Kirchhoff’s laws of spectroscopy, explain how the Sun’s light can be…
A: Kirchhoff gave 3 laws of spectroscopy. The first law states a continuous spectrum is produced by a…
Q: 11. What special conditions are required to conduct observations in the infrared?
A: Infrared astronomy specializes in observing and analysis of astronomical objects using infrared…
Q: Why do optical astronomers often put their telescopes at the tops of mountains, while radio…
A: Electromagnetic radiation is made of packets of energy called photons. They are differentiated by…
Q: justify the expenditure of space telescopes . discuss their ability with gamma and x ray wavelengths…
A: A space telescope, also known as a space observatory, is a telescope that is placed in space and…
Q: Consider a telescope with a primary mirror diameter of 10 inches compared to one which has a primary…
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Q: two reflecting telescopes have the same angular resolution, but one of them uses visible light and…
A: The formula for angular resolution is, θ=1.22λD (1) Where λ and D are the wavelength of light and…
Q: In what regions of the electromagnetic spectrum is the atmos- phere transparent enough to allow…
A: Our atmosphere consists of layers of gas held together by the Earth's gravity. It contains 78 %…
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- A powerful telescope can observe an object down to about the 30th magnitude in the B-band. To what distance can this kind of telescope observe a star such as the Sun? What kind of energy flux is observed at this telescope in terms of the solar constant? (Show your work for all calculations)Geostationary satellites cannot be seen in a telescope from Albany because they are always directly over the Equator. True FalseCalculate the deflection of light caused by the Sun's gravity.
- This picture shows a radio meter. It is designed to be placed in a sunny window. One side of each thin blade of the radio meter is painted black, and the other side is painted white. The suns rays strike the blades, in the device begins to spin. The device is powered by which kind of energy?(2009)How did neutrino oscillation affect the detection of solar neutrinos by the Davis experiment?What is the limit of angular resolution for a 6.3-m telescope at a wavelength of 533nm?