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  2. 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 ...

  3. 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 ...

  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. 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.

  6. Wide Field Infrared Explorer - Wikipedia

    en.wikipedia.org/wiki/Wide_Field_Infrared_Explorer

    The WIRE telescope itself had an entrance aperture of 30 cm (12 in) and a 32 x 32 arcminutes field of view (FoV). It was of a Ritchey–Chrétien telescope design with no moving parts and no reimaging optics. Shortly after launch, while the spacecraft was still tumbling early after orbit insertion, the telescope cover came off prematurely.

  7. NEO Surveyor - Wikipedia

    en.wikipedia.org/wiki/NEO_Surveyor

    The NEO Surveillance Mission will employ a 50 cm (20 in) infrared telescope operating wide-field cameras at two thermal infrared wavelength channels for a total wavelength range between 4 μm and 10 μm. [3] The camera will have two channels: NC1 has a wavelength range of 4–5.2 μm and NC2 spans 6–10 μm.

  8. Transiting Exoplanet Survey Satellite - Wikipedia

    en.wikipedia.org/wiki/Transiting_Exoplanet...

    For comparison, Kepler's primary mission only covered an area of the sky measuring 105 deg 2, though the K2 extension has covered many such areas for shorter times. The four telescopes in the assembly each have a 10.5-cm diameter lens entrance aperture, with a f/1.4 focal ratio, with a total of seven lenses in the optical train. [59]

  9. NGC 1999 - Wikipedia

    en.wikipedia.org/wiki/NGC_1999

    NGC 1999, also known as The Cosmic Keyhole, [1] [2] is a dust-filled bright nebula with a vast hole of empty space represented by a black patch of sky, as can be seen in the photograph. It is a reflection nebula , and shines from the light of the variable star V380 Orionis .

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