Parallax - Wikipedia, the free encyclopedia
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Parallax is an apparent displacement or difference of orientation of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two l...
en.wikipedia.org/wiki/Parallax
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Trigonometric parallax is used to measure the distances of the nearby stars. The stars are so far away that observing a star from opposite sides of the Earth would produce a parallax angle much, much too small to detect.
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www.astronomynotes.com/starprop/s2.htm
www.astronomynotes.com/starprop/s2.htm
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What is parallax? ... Why parallax is not trivial to measure ... European astronomers designed a satellite specifically to measure the parallax of nearby stars.
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spiff.rit.edu/classes/phys240/lectures/parallax/paralla...
spiff.rit.edu/classes/phys240/lectures/parallax/parallax.html
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The finger appears to jump to the right. That's parallax. Distant stars appear to wobble, instead of jumping, against the starry background. (You can see the wobble by surfing to the U of Colorado's web site given in Further Surfing below.)
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www.wonderquest.com/parallax.htm
www.wonderquest.com/parallax.htm
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[78.17] An IR Survey of Faint Parallax Stars ... The observational part of the USNO CCD parallax program, which employed a TI800\times800 detector, has recently been completed. The astrometric targets, for which data have not yet been published, include 54 white dwarfs, 34 subdwarfs, and 32 red dwarfs with 14.0 mag < V < 19.5 mag.
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www.aas.org/publications/baas/v28n4/aas189/abs/S078017....
www.aas.org/publications/baas/v28n4/aas189/abs/S078017.html
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For initial tests of the precision see the chart on this web page. Initial parallax results are also available. Bright stars are observed through ND filters of 2.5, 5.0, 7.5, and 10.0 magnitudes. A similar precision is obtained for ND filtered and non-ND filtered stars.
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www.pitt.edu/~aobsvtry/PARALLAX.TXT
www.pitt.edu/~aobsvtry/PARALLAX.TXT
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A star with a parallax of 1 arc-second has a distance of 1 parsec. No known stars have parallaxes this big. Proxima Centauri has a parallax of 0.76". [The double quote is used to denote arc-seconds (as well as inches).]
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www.astro.ucla.edu/~wright/distance.htm
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SAO/NASA ADS Astronomy Abstract Service ... Title:; Remarks on the determination of the number and mean parallax of stars of different magnitude and the absorption of light in space...
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adsabs.harvard.edu/abs/1904AJ.....24..115K
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In this exercise, we investigate the use of the measured parallax method to determine distances to nearby stars, those within about 650 light years from the Sun. Even when observed with the largest telescopes, stars are still just points of light.
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www.astro.washington.edu/courses/labs/clearinghouse/lab...
www.astro.washington.edu/courses/labs/clearinghouse/labs/Parallax/parallax_stars.pdf
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