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The Meade LX90 is a Schmidt-Cassegrain design of telescope made by Meade Instruments for the mid-priced (2000 USD circa 2008) commercial telescope market. [ 1 ] [ 2 ] It uses a similar optical system to the bigger and more expensive Meade LX200 [ 2 ] —although it lacks some useful functions like primary mirror locking.
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]
This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
The Meade LX200 is a family of commercial telescopes produced by Meade Instruments launched in 1992 with 8" (20.32 cm) and a 10" (25.4 cm) Schmidt–Cassegrain models on computerized altazimuth mounts. [1] [2] Two larger models, a 12" (30.48 cm) and a 16" (40.64 cm), quickly followed.
Meade ETX telescope; Meade LX90; Meade LX200; MySky This page was last edited on 24 December 2019, at 07:48 (UTC). Text is available under the Creative Commons ...
In January 1999, Meade introduced the ETX-EC which included electronic control of both axis through a small hand-controller. An optional #497 Autostar package was offered and would replace the simple electric controls, turning the ETX-EC into a fully computerized "goto" telescope. A "standard" #883 tripod was available as an optional accessory.
Orion Telescopes & Binoculars was an American retail company that sold telescopes, binoculars and accessories online and in-store for astronomy and birdwatching. It was founded in 1975 and had corporate offices in Watsonville, California. [1] A large proportion of its products were manufactured by the Chinese company Synta for the Orion brand ...
The telescope may also be segmented into multiple smaller mirrors, which reduce the sagging due to weight that occurs for large, monolithic mirrors. The combination of actuators, an image quality detector, and a computer to control the actuators to obtain the best possible image, is called active optics.