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In 1970 Celestron introduced its "C8" 8" diameter 2032 mm focal length, ƒ10 telescope, the first of a new line of telescopes built using methods developed by Celestron to produce Schmidt-Cassegrains at a high volume and low cost. [1] These models made significant inroads into the amateur astronomical and educational communities.
Nexstar Media Group, Inc. is an American publicly traded media company with headquarters in Irving, Texas, Midtown Manhattan, and Chicago.The company is the largest television station owner in the United States, owning 197 television stations across the U.S., most of which are affiliated with the four "major" U.S. television networks and MyNetworkTV in markets as large as New York City and as ...
Powerful laser guide star system at the Paranal Observatory. The actual laser guide star is the small spot above the apparent end of the laser beam. A laser guide star is an artificial star image created for use in astronomical adaptive optics systems, which are employed in large telescopes in order to correct atmospheric distortion of light (called astronomical seeing).
A Dobsonian telescope on display at Stellafane in the early 1980s. A Dobsonian telescope is an altazimuth-mounted Newtonian telescope design popularized by John Dobson in 1965 and credited with vastly increasing the size of telescopes available to amateur astronomers.
The Herschel 400 catalogue is a subset of William Herschel's original Catalogue of Nebulae and Clusters of Stars, selected by Brenda F. Guzman (Branchett), Lydel Guzman, Paul Jones, James Morris, Peggy Taylor and Sara Saey of the Ancient City Astronomy Club in St. Augustine, Florida, United States c. 1980.
KBVO (channel 14) is a television station licensed to Llano, Texas, United States, serving the Austin area as an affiliate of MyNetworkTV.It is owned by Nexstar Media Group alongside NBC affiliate KXAN-TV (channel 36); Nexstar also provides certain services to KNVA (channel 54), a de facto owned-and-operated station of The CW, under a local marketing agreement (LMA) with Vaughan Media.
ATSC 3.0 is a major version of the ATSC standards for terrestrial television broadcasting created by the Advanced Television Systems Committee (ATSC). [1] [2] [3]The standards are designed to offer support for newer technologies, including HEVC for video channels of up to 2160p 4K resolution at 120 frames per second, wide color gamut, high dynamic range, Dolby AC-4 and MPEG-H 3D Audio ...