A three-mirror anastigmat is an anastigmat telescope built with three curved mirrors, enabling it to minimize all three main optical aberrations – spherical...

the word Anastigmat in their name to advertise this new feature (Doppel-Anastigmat, Voigtländer Anastigmat Skopar, etc.). The first Anastigmat was designed...

reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented...

design with a total of five mirrors. The first three mirrors are curved (non-spherical) and form a three-mirror anastigmat design for excellent image quality...

third curved optical element. When this element is a mirror, the result is a three-mirror anastigmat. Alternatively, a RCT may use one or several low-power...

Ritchey–Chrétien, for example. LSST will use a three-mirror anastigmat to cancel astigmatism by employing three non-spherical mirrors. The result is sharp images over...

and a three-mirror anastigmat design with a focal length of about 600 mm (24 in); the instantaneous field of view is about 21° by 3.5°. The mirrors are...

in 2011–2012, featuring a 1.3 m (4.3 ft) diameter unobstructed three-mirror anastigmat telescope. It contained a single instrument, a visible to near-infrared...

75 cm (30 in)-diameter primary mirror in a three-mirror anastigmat configuration which will capture and redirect light to three different sensors. Two of these...

the mirror with 10 nanometer accuracy. Webb's optical design is a three-mirror anastigmat, which makes use of curved secondary and tertiary mirrors to...

satellite has a mass of 148 kilograms (326 lb), and carries a three-mirror anastigmat to track artificial objects in medium Earth orbit to geosynchronous...

17th-century objective lenses, etc. Optical telescopes can be classified by three primary optical designs (refractor, reflector, or catadioptric), by sub-designs...

to the difficulties encountered in polishing Gaia's ten silicon carbide mirrors and assembling and testing the focal plane camera system. The Gaia space...

ices, and organics at the surface. The L'Ralph instrument has a three-mirror anastigmat design f/6 with a 75 mm aperture. The telescope structure is composed...

deployed, these segments are part of the three-mirror anastigmat design's primary element and don't serve as fold mirrors in the optical sense. Periscope lens...

for example, Ritchey-Chrétien telescope, or three-mirror anastigmats such as LSST.) Non-spherical mirrors such as these will not give a null result when...

the three-mirror anastigmat. This consists of a main mirror with a diameter of 2 meters to take in light. It reflects this light to a second mirror. Then...

Max power use: 7.1 watts Telescope design Unobscured Off-axis Three-mirror anastigmat Aperture 75 mm f/8.7 Effective focal length 658 mm Electronic control...

feature often had the word Anastigmat in their name: Voigtländer Anastigmat Skopar. A Tessar comprises four elements in three groups, one positive crown...

mission led by the Canadian Space Agency. With its 1-meter diameter primary mirror, CASTOR would provide imaging capabilities in the ultraviolet (UV) and blue-optical...

There are also a small number of off-axis unobstructed all-reflecting anastigmats which give optically perfect images. Refracting telescopes and their...

& H) Cooke Triplet was a deceptively simple looking asymmetric three element anastigmat formula created by reexamining lens design from first principles...

three groups—the third group being three cemented elements—and was initially named the Leitz Anastigmat. Unlike other triplets, the Leitz Anastigmat has...

assigned to Wild Heerbrugg AG  Kingslake, Rudolf (1989). "8. Meniscus Anastigmats". A History of the Photographic Lens. San Diego: Academic Press. pp. 117–130...

designed to reduce or eliminate astigmatism. Such systems are called anastigmats. If an optical system is not axisymmetric, either due to an error in...

was the most widely used for portraits until Carl Zeiss introduced the anastigmat lens in 1889.: 19  Within a decade of being introduced in America, 3 general...

704) Sonnar f/1.5 (Bertele, 1932, per US 1,975,678) The Cooke triplet anastigmat, designed by Dennis Taylor and patented in 1893, was modified in 1916...

8/80 lens Pål-Nils Nilsson with Cook & Perkins Dallmeyer Dallon Tele-Anastigmat 5.6/500 lens The original normal lens for the 1600F and 1000F was the...

Focal Press. ISBN 0817406654. Kingslake, Rudolf (1989). "8. Meniscus Anastigmats". A History of the Photographic Lens. San Diego: Academic Press. pp. 117–130...

Finally, the out-coupling beam splitter (which is a partially reflecting mirror, not a polarizing beam splitter) reflects the collimated light another 45°...