![]() You get yourself lined up, maybe five to ten feet out. compared docking with the Agena to air-to-air refueling: The Gemini would rendezvous and dock with the Agena as soon as Gemini's first orbit toward the end of the program. Both countdowns would proceed in parallel and required close synchronization. The McDonnell Gemini spacecraft would then be launched from Launch Complex 19, as soon as 90 minutes later. Over Ascension Island, a second burn would place the Agena into a low circular orbit. The Agena first burn would occur shortly after shroud jettison and separation from the Atlas over the Atlantic Ocean. The Agena was launched from Cape Kennedy's Launch Complex 14 on top of an Atlas booster built by the Convair division of General Dynamics. Operations An Atlas-Agena launch vehicle launches GATV-5006 into orbit for the Gemini 11 mission.Įach ATV consisted of an Agena-D-derivative upper rocket stage built by Lockheed Aircraft and a docking adapter built by McDonnell Aircraft. The ATDA was used once on Gemini 9A after a second ATV launch failure on May 17, 1966, but failed as a docking target because its launch shroud failed to separate. The ATV for Gemini 6 failed on launch on October 25, 1965, which led NASA to develop a backup: the Augmented Target Docking Adapter (ATDA), a smaller spacecraft consisting of the docking target with an attitude control propulsion system but without the Agena orbital change rocket. It carried about 14,021 to 14,054 pounds (6,360 to 6,375 kg) of propellant and gas at launch, and had a gross mass at orbital insertion of 7,117 to 7,271 pounds (3,228 to 3,298 kg). The combined spacecraft was a 26-foot (7.92 m)-long cylinder with a diameter of 5 feet (1.52 m), placed into low Earth orbit with the Atlas-Agena launch vehicle. The name 'Agena' derived from the star Beta Centauri, also known as Agena. The spacecraft was based on Lockheed Aircraft's Agena-D upper stage rocket, fitted with a docking target manufactured by McDonnell Aircraft. Close the battery door and tighten the Phillips-head screw to secure the door in place.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. Press the battery down to snap it into the plastic battery clips on the opposite side of the battery.Ħ. Place the new CR-2032 battery, positive (+) side up, under the two copper battery clips at the front of the battery compartment.ĥ. With your fingernail on either side of the battery, pry the battery up and out of the battery compartment.Ĥ. Lift the battery door open to expose the CR-2032 button battery.ģ. The screw is captured and will not fall out when you open the battery door.Ģ. ![]() Use a Philips-head screwdriver to loosen the screw holding the battery door closed. The battery compartment on this finderscope is located on top of the unit. If you received a red dot finderscope that looks like the unit pictured here, follow the instructions below to replace the battery:ġ. If your red dot finderscope looks like the unit pictured here, you can ignore this message. The main difference is the location of the battery compartment and, therefore, the battery installation instructions. Rest assured that the finders are identical in performance and features. We apologize for any inconvenience this may cause. In some cases, you may receive a finderscope that is different in appearance than the one pictured on the gift box, manual, Quick Setup Guide, or website. Optical tube Mount and tripod Accessory tray 25mm and 10mm eyepieces StarPointer™ red dot finderscope Battery pouchĬelestron is making a change to the finderscope shipped with some Celestron telescopes. Each provide over 100,00 objects in their database Optional Nexstar+ hand remote provides over 40,000 objects in the computer's databaseĬelestron Starry Night Special Edition Software and SkyPortal App. SkyAlign, 3-Star Align, Solar System Align Includes rubberized smartphone or tablet holder Height adjustment range (includes mount and tripod): Secondary Mirror Obstruction by Diameter:Ĭomputerized Altitude-Azimuth Single Fork Arm ![]() Light Gathering Power (Compared to human eye): ![]()
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