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  2. List of largest optical telescopes in the 19th century

    en.wikipedia.org/wiki/List_of_largest_optical...

    refractor: County Sligo, United Kingdom of Great Britain and Ireland: 1834 [31] The 12.8 Inch Merz refractor at Royal Greenwich Observatory [33] 32.5 cm (12.8") refractor: Greenwich, England: 1850s McMillin Observatory 12½-inch [34] 31.75 cm (12½") refractor: Ohio, USA: 1895; 1896–1968 Bamberg Refractor, Wilhelm Foerster Observatory (since ...

  3. PAGASA Observatory - Wikipedia

    en.wikipedia.org/wiki/PAGASA_Observatory

    The facility's observatory dome hosts a computer-based 45 cm (1.48 ft) Cassegrain reflector telescope [1] [2] installed at the site in May 2001 and donated by the Japanese government through a cultural aid grant. [3] Before this period, the observatory used a 30 cm (0.98 ft) reflector-type telescope. [1]

  4. Orion Telescopes & Binoculars - Wikipedia

    en.wikipedia.org/wiki/Orion_Telescopes_&_Binoculars

    Orion ED120 apo refractor on Orion's Sirius EQ-G "GoTo" and GPS equipped German equatorial mount with portable 12 volt power supply. Orion sold a range of telescopes that they characterize as "beginner", "intermediate" or "advanced", including Newtonians, Maksutovs, Schmidt-Cassegrains, Ritchey-Chrétiens and refractors with or without (sold as optical tube assemblies or "OTA") a variety of ...

  5. Celestron - Wikipedia

    en.wikipedia.org/wiki/Celestron

    A range of 2.4 to 6-inch (150 mm) refractor telescopes. 6 to 10-inch (250 mm) traditional reflector telescopes on German equatorial mounts. SkyScout – an astronomical sky finder or a personal planetarium. Digital, Biological, and Stereo viewing microscopes; Binoculars and Spotting scopes; Various mounts

  6. List of large optical telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_large_optical...

    This is a list of large optical telescopes. For telescopes larger than 3 meters in aperture see List of largest optical reflecting telescopes . This list combines large or expensive reflecting telescopes from any era, as what constitutes famous reflector has changed over time.

  7. Refracting telescope - Wikipedia

    en.wikipedia.org/wiki/Refracting_telescope

    Some famous 19th century doublet refractors are the James Lick telescope (91 cm/36 in) and the Greenwich 28 inch refractor (71 cm). An example of an older refractor is the Shuckburgh telescope (dating to the late 1700s). A famous refractor was the "Trophy Telescope", presented at the 1851 Great Exhibition in London.

  8. List of astronomical observatories - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomical...

    Then with the discovery of optics, with the help of different types of refractor telescopes and later with reflector telescopes. Their use allowed to dramatically increase both the collecting power and limit of resolution , thus the brightness , level of detail and apparent angular size of distant celestial objects allowing them to be better ...

  9. List of largest optical refracting telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_optical...

    However, other large refractors include a 21st-century solar telescope which is not directly comparable because it uses a single element non-achromatic lens, and the short-lived Great Paris Exhibition Telescope of 1900. It used a 78-inch (200 cm) Focault siderostat for aiming light into the Image-forming optical system part of the telescope ...

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