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The ETX started out as a 90 mm (3-1/2") Maksutov Cassegrain telescope (first produced in 1996) and took advantage of high volume mass production and simplified optical and parts construction to open a new market for a cheap alternative to the very expensive Questar 3-1/2 Maksutov Cassegrain [1] [2] The ETX "line" has been expanded to 105 mm, and 125 mm Maksutov Cassegrains and achromatic ...
Accessories produced by Meade include the series 5000 eyepieces that are comparable in construction to those of Chester, New York-based Tele Vue Optical's "Nagler" (82-degree field of view), "Panoptic" (68-degree field of view), and "Radian" (60-degree field of view) eyepieces. Meade sells Deep Sky and Lunar digital imagers for
Maksutov's 1944 design was the first-published meniscus telescope design, and was published in the widely-read Journal of the Optical Society of America. [11] [12] [7] This led to professional and amateur designers almost immediately experimenting with variations, including Newtonian, Cassegrain, and wide-field camera designs.
Hoka makes some of the best sneakers in the business, and during Presidents' Day, you can find them on sale at multiple retailers. The Hoka Clifton 9 are well loved among Nordstrom shoppers (2,500 ...
Texas law enforcement issued a word of warning to Ford truck owners after they arrested a trio of thieves who targeted the high-end truck model by stealing taillights.
What a difference three years makes. In January 2022, Hugh Jackman and Sutton Foster were married to other people and preparing to play love interests in Broadway’s The Music Man.Now they’re a ...