Astronomical Instrument

Cosma Home > Communication > Knowledge > Realm > Physical > Universe > Astronomical Instrument


Note: This is a 360° Video — press and hold to explore it!



Physical Realm
Universe Astronomical Instrument
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon

Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid


These are organized by a classification scheme developed exclusively for Cosma. More…



Observational astronomy is a division of astronomy that is concerned with recording data about the observable universe, in contrast with theoretical astronomy, which is mainly concerned with calculating the measurable implications of physical models. It is the practice and study of observing celestial objects with the use of telescopes and other astronomical instruments.

Galileo Galilei turned a telescope to the heavens and recorded what he saw. Since that time, observational astronomy has made steady advances with each improvement in a variety astronomical instruments and related methods. — Wikipedia

Observational Astronomy (Eric Weisstein’s World of Astronomy, Wolfram Research)
Observatories & Telescopes (Wolfram Alpha)
Encyclopædia Britannica

Astronomical Instruments, Category (Wikipedia)
Astronomical Instruments, List (Wikipedia)


Australian Astronomical Observatory (AAO)



Galileo and the telescope (The Science Geek)
The History of Astronomy (Ask an Astronomer, Cornell University)


Smithsonian National Air and Space Museum


WorldCat, Library of Congress, UPenn Online Books, Open Library



Telescopes (NASA.Gov)
Observational Astronomy (Ask an Astronomer, Cornell University)
Telescopes (Ask an Astronomer, Cornell University)
Telescopes (Cosmos4Kids)


Crash Course Astronomy (YouTube)

OER Commons: Open Educational Resources



Careers in Astronomy (Ask an Astronomer, Cornell University)


Sky & Telescope, ScienceDaily,, NPR Archives






Acapella Science (YouTube Channel)



Observing News & Current Celestial Events – Sky & Telescope The essential guide to astronomy / All Sky & Telescope ( content is copyrighted. Please contact us for reuse permissions.

  • R Coronae Borealis Awakes and Pluto Blocks a Star
    by Bob King on August 8, 2018 at 2:49 pm

    Sometimes, it's just as exciting to watch a celestial object fade or disappear as it is to see it explode. We celebrate the "return" of a mysterious variable star and prepare for Pluto to occult a star. The post R Coronae Borealis Awakes and Pluto Blocks a Star appeared first on Sky & Telescope. […]

  • Catch the Perseid Meteor Shower at Its Peak
    by JR on August 7, 2018 at 2:34 pm

    Plan for optimal conditions for the year’s Perseid meteor shower, early in the mornings of August 12th and 13th. The post Catch the Perseid Meteor Shower at Its Peak appeared first on Sky & Telescope. […]

  • Tour August’s Sky: Perseid Time!
    by Kelly Beatty on August 2, 2018 at 6:12 pm

    As told in this month's astronomy podcast, August offers excellent viewing conditions for the always-flashy Perseid meteor shower — and a chance to see four bright planets at once. The post Tour August’s Sky: Perseid Time! appeared first on Sky & Telescope. […]

  • Red Moon Meets Red Planet in Longest Total Lunar...
    by Bob King on July 25, 2018 at 2:49 pm

    Not only will the Moon will be totally eclipsed this Friday, but Mars will be at opposition and shine in tandem with the red Moon all night! The post Red Moon Meets Red Planet in Longest Total Lunar Eclipse of the Century appeared first on Sky & Telescope. […]

  • See Mars at Its Best Since 2003
    by Bob King on July 24, 2018 at 1:04 pm

    Wonder what to see now that Mars is at its biggest and brightest? Here are expert tips for when, where, and how to look. The post See Mars at Its Best Since 2003 appeared first on Sky & Telescope. […]

Space Telescopes News -- ScienceDaily Space Telescopes. Astronomy articles and pictures from NASA's Hubble Space Telescope and Chandra X-Ray Telescope and many other leading astronomy institutes from around the world.

  • Looking back in time to watch for a different...
    on September 19, 2018 at 2:10 pm

    A simulation has suggested what astronomers should look for if they search the skies for a direct collapse black hole in its early stages. […]

  • NASA's TESS shares first science image in hunt to...
    on September 17, 2018 at 7:36 pm

    NASA's Transiting Exoplanet Survey Satellite, which began science operations in July, has released its first full frame image using all four of its cameras. […]

  • Never-before-seen features found around a neutron...
    on September 17, 2018 at 3:43 pm

    An unusual infrared light emission from a nearby neutron star detected by NASA's Hubble Space Telescope could indicate new features never before seen. […]

  • BUFFALO charges towards the earliest galaxies
    on September 13, 2018 at 3:39 pm

    The NASA/ESA Hubble Space Telescope has started a new mission to shed light on the evolution of the earliest galaxies in the Universe. The BUFFALO survey will observe six massive galaxy clusters and their surroundings. The first observations show the galaxy cluster Abell 370 and a host of magnified, gravitationally lensed galaxies around it. […]

  • Stunning details of spiral galaxy NGC 3981
    on September 12, 2018 at 12:13 pm

    FORS2, an instrument mounted on ESO's Very Large Telescope, has observed the spiral galaxy NGC 3981 in all its glory. The image was captured as part of the ESO Cosmic Gems Programme, which makes use of the rare occasions when observing conditions are not suitable for gathering scientific data. […] - latest science and technology news stories internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Image: Herschel's view of the galactic centre
    on September 24, 2018 at 1:20 pm

    An odd-shaped formation of gas and dust at the centre of the Milky Way, captured by the far-infrared cameras on board ESA's Herschel space observatory. The nearly continuous strip of dense and cold clumps of material forms an infinity symbol, or sideways 8, that is a few hundred light years across. In this image, the strip twists around an invisible axis running roughly from the top left to the bottom right. […]

  • Three NASA missions return first-light data
    on September 21, 2018 at 5:44 pm

    NASA's continued quest to explore our solar system and beyond received a boost of new information this week with three key missions proving not only that they are up and running, but that their science potential is exceptional. On Sept. 17, 2018, TESS—the Transiting Exoplanet Survey Satellite—shared its first science observations. Later in the week, the latest two missions to join NASA's heliophysics fleet returned first light data: Parker Solar Probe, humanity's first mission to […]

  • Dwarf companion to EPIC 206011496 detected by...
    on September 20, 2018 at 1:00 pm

    Using ESO's Very Large Telescope (VLT), European astronomers have uncovered the presence of an M-dwarf around the star EPIC 206011496. The newly found object is more than 60 percent less massive than our sun and is bounded to the primary star. The finding is reported in a paper published September 10 on […]

  • Going off-road in the search for dark skies
    on September 19, 2018 at 2:07 pm

    An out-of-this-world mobile observatory, developed in collaboration with Nissan Design Europe in London, UK, was unveiled at the 2018 Hannover Motor Show this week, proving that the sky is never the limit. […]

  • Halfway mark for NOEMA construction
    on September 19, 2018 at 12:40 pm

    The completion of NOEMA phase 1, the first phase of the NOEMA project will be officially celebrated this Wednesday, September 19th. IRAM and its partner institutes have completed the first, decisive step towards one of the most important German-French-Spanish initiatives in astronomy: developing the most powerful and most sensitive telescope at millimetre wavelengths in the Northern hemisphere. Four years after the inauguration of the first NOEMA antenna, 10 15-meter dishes currently constitute […]