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Tele Vue once manufactured a 5" refracting telescope named the MPT, the Multi-Purpose Telescope. It had a fast f/4 ratio, and had an adjustable diaphragm that ranged from f/4 to f/20. Only a small number were made, with the last being kept by Televue to use as a final optical quality control for all eyepieces they make.
Thor DM-21 Agena-D or just Thor-Agena was an orbital launch vehicle. The launch vehicles used the Douglas -built Thor first stage and the Lockheed -built Agena second stages. They are thus cousins of the more-famous Thor-Deltans, which founded the Delta launch vehicle family.
The first Agena-D launch was of KH-4 #7 on June 28, 1963, and a total of 269 Agena-Ds were launched. The Agena-D was used to launch KH-7 GAMBIT and KH-8 Gambit 3 reconnaissance satellites, three Mariner probes to Venus and the two Mariner space probes to Mars. Thor-Agena flew for the last time in 1972 when it launched a KH-4B satellite.
The Agena Target Vehicle (/ ə ˈ dʒ iː n ə /; ATV), also known as Gemini-Agena Target Vehicle (GATV), was an uncrewed spacecraft used by NASA during its Gemini program to develop and practice orbital space rendezvous and docking techniques, and to perform large orbital changes, in preparation for the Apollo program lunar missions. [1]
The second stage was the Agena-D, which had already been used in conjunction with the standard configuration Thor, as the Thor-Agena. Three Castor rockets would be used as boosters . Most launches carried Corona (KeyHole) reconnaissance satellites , particularly spacecraft of the KH-4 series, however some scientific and technology development ...
The result was the Atlas LV-3 Agena D, a standardized version of the Atlas D core and Agena B which would be the same on every launch (at least as far as the Atlas was concerned, Agena Ds often still had customized setups, especially for DoD payloads). The Agena D first flew in July 1963, starting a series of 15 successful launches for NASA and ...
Used on the Agena-B, it first flew on December 20, 1960 and last flight was on May 15, 1966. [9] Bell Model 8096: USAF designation XLR81-BA-11 and later, YLR81-BA-11. [4] [5] Main production version, used on the Agena-D. It added to the 8081 a titanium with molybdenum reinforcements nozzle extension, which enabled it to reach an I sp of 280 s ...
Telescopic sight (German made ZF Ajack 4×90 (4×38 in modern terminology) for the World War II pattern Swedish sniper rifle m/1941. Russian Model 1891/30 sniper rifle with PU 3.5×21 sight The Zielgerät ZG 1229 Vampir displayed by a British soldier (ca 1945)