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  2. Astronomy Picture of the Day - Wikipedia

    en.wikipedia.org/wiki/Astronomy_Picture_of_the_Day

    Astronomy Picture of the Day (APOD) is a website provided by NASA and Michigan Technological University (MTU). It reads: "Each day a different image or photograph of our universe is featured, along with a brief explanation written by a professional astronomer ."

  3. Peter B. Lawrence - Wikipedia

    en.wikipedia.org/wiki/Peter_B._Lawrence

    Lawrence first became interested in astronomy when he was a small boy, around the time of the Apollo Moon landings. His parents bought him a 40mm refractor telescope and very soon, after hunting down the planet Saturn with it, he was hooked. He used a copy of the Times Night Sky to locate Saturn and now supplies the monthly chart for the same ...

  4. Catalogues of Fundamental Stars - Wikipedia

    en.wikipedia.org/wiki/Catalogues_of_Fundamental...

    The six volumes in the fundamental catalogue series are as follows: The Fundamental-Catalog (FC) was compiled by Auwers and published in two volumes. The first volume, published in 1879, contains 539 stars.

  5. Astrometry - Wikipedia

    en.wikipedia.org/wiki/Astrometry

    Astrometry is a branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies. It provides the kinematics and physical origin of the Solar System and this galaxy , the Milky Way .

  6. Dylan O'Donnell - Wikipedia

    en.wikipedia.org/wiki/Dylan_O'Donnell

    His photos have been published several times on the websites of NASA and the ESA. [ 7 ] Having set up an observatory behind his house in Byron Bay, O'Donnell began submitting his astrophotographs to a variety of websites, [ 3 ] with some being published by NASA, ESA, Time , and National Geographic . [ 1 ]

  7. Spherical astronomy - Wikipedia

    en.wikipedia.org/wiki/Spherical_astronomy

    The science of actually measuring positions of celestial objects in the sky is known as astrometry. The primary elements of spherical astronomy are celestial coordinate systems and time. The coordinates of objects on the sky are listed using the equatorial coordinate system , which is based on the projection of Earth's equator onto the ...

  8. Astrometric solving - Wikipedia

    en.wikipedia.org/wiki/Astrometric_solving

    Astrometry. Professional setups are using astrometric solving to measure accurately the position of minor planets or comets to calculate orbital parameters. [5] Telescope Mount pointing. Astrometric solving is used for pointing the telescope mount accurately by syncing it to the celestial position of the image center. [6]

  9. Wikipedia:Picture of the day/January 28, 2005 - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Picture_of_the...

    Picture of the day. Halos are optical phenomena that appear near or around the Sun or Moon, and sometimes near other strong light sources such as street lights. There are many types of halos, but they are mostly caused by ice crystals in cold cirrus clouds located high (5-10 km, or 3-6 miles) in the upper troposphere. The particular shape and ...