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Face poles on the spherical projection are projected further to a plane (usually a sheet of paper or a screen) tangent to it by the gnomic projection.
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www.tele.ed.nom.br/gno4i.html
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In a gnomonic projection, great circles are mapped to straight lines. The gnomonic projection represents the image formed by a spherical lens, ...
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mathworld.wolfram.com/GnomonicProjection.html
mathworld.wolfram.com/GnomonicProjection.html
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The Gnomonic projection is one which has a greater expansion, away from the origin, than a conformal projection. It gives quite a distorted apperance, therefore: ... Hence, on the gnomonic projection, all great circles are represented by straight lines, making it very useful in plotting great circle routes between...
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members.shaw.ca/quadibloc/maps/maz0201.htm
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This projection may have been first developed by Thales around 580 B.C. Its name is derived from the gnomon, the face of a sundial, since the meridians radiate like hour markings. This projection is also known as a Gnomic or Central projection.
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www.mathworks.com/access/helpdesk_r13/help/toolbox/map/...
www.mathworks.com/access/helpdesk_r13/help/toolbox/map/gnomonicprojection.html
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Constructs a new gnomic projection. The center of the projection is given in degrees, right ascension and declination. The dimension of the fits is for normalization. The center of the projection is in CCD pixels, normally the center of the CCD. It corresponds to the ra de of the center.
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www.aip.de/~granzer/javadoc/standard/astro/FitsTools.Gn...
www.aip.de/~granzer/javadoc/standard/astro/FitsTools.GnomicProjection.html
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Astrology - see your horoscope projected onto the world using a gnomic projection ... Along with developing the Astrology of Interplanetary Lines in the Horoscope, we decided to use the gnomic projection, so that great circles on the surface of the Earth would appear as straight lines.
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www.fortunecity.com/roswell/jekyll/75/3DAstrology.html
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Signal boosting from just about everywhere: Stacy Whitman ( slwhitman), freelance editor and fellow Simmons Center for the Study of Children's Literature grad, is trying to start a new publishing company. ... Tu Publishing will be "a small, ... Telling the students in my fantasy and science fiction class that my syllabus,
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gnomicutterance.livejournal.com/
gnomicutterance.livejournal.com/
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Map projections: the azimuthal group of projections ... The gnomonic (also called central, azimuthal centrographic or rarely gnomic) projection is constructed much like the azimuthal stereographic, but the ray source is located exactly on the sphere's center; therefore it can present even less than one hemisphere at a time.
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www.progonos.com/furuti/MapProj/Dither/ProjAz/projAz.ht...
www.progonos.com/furuti/MapProj/Dither/ProjAz/projAz.html
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The concept of gnomonic projection requires some explanation. It is the only map projection that shows great circles as straight lines - thus all meteors can be drawn onto gnomonic charts as straight lines too. On other maps, such as those found in "Norton's Star Atlas", most meteors would appear as sections of arcs.
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www.imo.net/visual/minor/gnomic
www.imo.net/visual/minor/gnomic
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