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  2. 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 ...

  3. Meade Instruments - Wikipedia

    en.wikipedia.org/wiki/Meade_Instruments

    The Meade Instruments (also shortened to Meade) was an American multinational company headquartered in Watsonville, California, that manufactured, imported and distributed telescopes, binoculars, spotting scopes, microscopes, CCD cameras, and telescope accessories for the consumer market. [2]

  4. Astrophotography - Wikipedia

    en.wikipedia.org/wiki/Astrophotography

    The telescope used by Berkowski was attached to 6 + 1 ⁄ 2-inch (17 cm) Königsberg heliometer and had an aperture of only 2.4 in (6.1 cm), and a focal length of 32 in (81 cm). Commencing immediately after the beginning of totality, Berkowski exposed a daguerreotype plate for 84 seconds in the focus of the telescope, and on developing an image ...

  5. Astroscan - Wikipedia

    en.wikipedia.org/wiki/Astroscan

    The Astroscan had a Newtonian reflector layout with a 4 + 1 ⁄ 8 in (10 cm) clear-inch diameter f/4.2 aluminized and overcoated borosilicate glass parabolic primary mirror with a focal length of 17 + 1 ⁄ 2 inches (44 cm). [1] The telescope's secondary mirror was mounted on a flat optical window at

  6. Optical telescope - Wikipedia

    en.wikipedia.org/wiki/Optical_telescope

    The telescope is more a discovery of optical craftsmen than an invention of a scientist. [1] [2] The lens and the properties of refracting and reflecting light had been known since antiquity, and theory on how they worked was developed by ancient Greek philosophers, preserved and expanded on in the medieval Islamic world, and had reached a significantly advanced state by the time of the ...

  7. Wide-field Infrared Survey Explorer - Wikipedia

    en.wikipedia.org/wiki/Wide-field_Infrared_Survey...

    WISE achieved at least 68, 98, 860, and 5400 μJy; 5 sigma sensitivity at 3.4, 4.6, 12, and 22 μm for the WISE All-Sky data release. [27] This is a factor of 1,000 times better sensitivity than the survey completed in 1983 by the IRAS satellite in the 12 and 23 μm bands, and a factor of 500,000 times better than the 1990s survey by the Cosmic ...

  8. Celestron - Wikipedia

    en.wikipedia.org/wiki/Celestron

    A range of 8", 11", and 36 cm Rowe-Ackermann Schmidt Astrographs (RASA) [11] 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

  9. XMM-Newton - Wikipedia

    en.wikipedia.org/wiki/XMM-Newton

    The Optical Monitor (OM) is a 30 cm (12 in) Ritchey–Chrétien optical/ultraviolet telescope designed to provide simultaneous observations alongside the spacecraft's X-ray instruments. The OM is sensitive between 170 and 650 nanometres in a 17 × 17 arcminute square field of view co-aligned with the centre of the X-ray telescope's field of view.

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