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It aligns the telescope with the Earth's axis, so that instead of moving up and down and turning around (alt-az mount), it moves in the Declination direction and the Right Ascension direction. This means you only have to turn the RA axis to keep an object centred. ... The constellation starts off in a certain position...
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www.astronomyforbeginners.com/astronomy/celestialsphere...
www.astronomyforbeginners.com/astronomy/celestialsphere.php
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One of two celestial coordinates required to locate an astronomical object, such as a star, on the celestial sphere. Declination is the measure of angular distance of a celestial object above or below the celestial equator and is comparable to latitude. ... Field of View (FOV) ... Right Ascension (RA)
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hubblesite.org/reference_desk/glossary/index.php?topic=...
hubblesite.org/reference_desk/glossary/index.php?topic=topic_astronomy
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Once the target is identified our software permits us to calculate the positions of every object on an image. We use the celestial coordinates, Right Ascension (RA) and Declination (Dec) to pin-point target position. ... Engineering Science & Physics Department...
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supernova7.apsc.csi.cuny.edu/research.html
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This is most commonly done with astronomical object names (e.g. ... The syntax for a position search is: right ascension ±declination: radius; All three values can be ... To modify the default search logic, please use the appropriate check buttons which can be found right above the input search box for the field in question.
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adsdoc.harvard.edu/abs_doc/help_pages/search.html
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FIG. 1. Imaging sky coverage for the SDSS EDR. A box defined by raMin, raMax, decMin, and decMax is filled in for each Field object. ... Header information using the world coordinate system (WCS) allows standard astronomical FITS tools to convert pixel position to right ascension and declination (§ 4.2.2).
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www.iop.org/EJ/article/1538-3881/123/1/485/201415.html
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A telescope collects light from a distant object and focuses it to form an image of the object. ... Many inexpensive amateur telescopes use this mounting. The other mounting type uses axes parallel and perpendicular to Earth’s axis of rotation (called right ascension and declination) and is called an equatorial mount.
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amazing-space.stsci.edu/resources/explorations/groundup...
amazing-space.stsci.edu/resources/explorations/groundup/teacher/sciencebackground.html
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the relativistic apparent angular displacement of the observed position of a celestial object from its geometric position, ... a measure on a logarithmic scale of the brightness of a celestial object. ... Proper motion is usually tabulated in star catalogs as changes in right ascension and declination per year or century.
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asa.usno.navy.mil/SecM/Glossary.html
asa.usno.navy.mil/SecM/Glossary.html
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science archive ... The SDSS uses three different coordinate systems. Of course, we use standard astronomical right ascension (RA) and declination (Dec), J2000. ... Header information using the world coordinate system (WCS) allows standard astronomical FITS tools to convert pixel position to right ascension and declination.
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www.sdss.org/dr4/glossary/index.html
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As the instrument field is dragged with the middle mouse button, its right ascension and declination are displayed next to the cross hair that moves along with it. As the instrument view is rotated with the middle mouse button, its position angle on the sky reads out as in the lower left portion of the display.
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www.cv.nrao.edu/adass/adassVI/conrada.html
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