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Measuring the Solar Diameter with a Michelson Radio
Measuring the Solar Diameter with a Michelson Radio

... What are the actual baselines, based on the fringe spacing? Make sure to correct by the cosine of the solar elevation angle. At what baseline Bλ is the visibility of the Sun closest to zero? This gives an approximate measurement of the size of the Sun. What is it? Can your plot of visibilities V0 (B ...
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Chapter 18: Light and Optics
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SRC - University of Leicester
SRC - University of Leicester

Download PDF
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... [3]. This fact is of considerable significance because it follows, in particular, that the phase of an optical wave field can be determined from correlation measurements. In this Letter, we prove that this equivalent field U can be completely determined from measurements of the crossspectral density ...
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... The dish reflector of a radio telescope, like the mirror of a reflecting telescope, collects and focuses radiation. As radio waves are much longer than light waves, the dish need not be as smooth as a mirror.  In some radio telescopes, the reflector may not even be dish-shaped, or the telescope may ...
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IBT Poster -- TAO - Roane State Community College
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... Because the NIF laser beam energy can be 18kJ at 1ω, a reflection of 0.1% creates an 18J reflection (a respectable laser in its own right) • The single-bounce backward and double-bounce forward focal lengths define the ghosts for a collimated beam ...
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Reflecting telescope



A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic aberration. Although reflecting telescopes produce other types of optical aberrations, it is a design that allows for very large diameter objectives. Almost all of the major telescopes used in astronomy research are reflectors. Reflecting telescopes come in many design variations and may employ extra optical elements to improve image quality or place the image in a mechanically advantageous position. Since reflecting telescopes use mirrors, the design is sometimes referred to as a ""catoptric"" telescope.
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