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... 15 yr from 40 sounding rocket launches. Through its complex ground-command spacecraft-attitude system Oao II would be aimed at individual objects in space with precision never before at­tained ... failed because of power supply system malfunction and probable high voltage arcing in star tracker. OAO pro­gram was managed by GSFC under OSSA direction. ''(NASA Proj Off; NASA Release 68 ... "might use the opportunity of being in lunar orbit Christ- December 7-10: NASA's' Oao-II 21-foot-wide, 4,400-pound Orbiting Astronomical Obser­vatory carried 11 telescopes into ...

... metric system and detrimental to our own." ''(C Trib, 8/21/72)'' August 21-29: OAO 3 (Copernicus) Orbiting Astronomical Observatory was launched into orbit to observe stars, planets, nebulae, galaxies ... radiation, from above the earth's atmosphere. By Aug. 29, checkout had been completed and OAO 3 was obtaining excellent data. In the photo, the spacecraft's Atlas-Centaur launch vehicle ... undergoing calibration and alignment and would begin observing x-ray sources in September. Fourth OAO launched by NASA, OAO 3 at 2200 kg (4900 lbs), 2 m wide and 3 m high ...

... bat-shaped satellite—the Orbiting Astronomical Observatory 2 ( Orbiting Astronomical Observatory 2 OAO 2 ). Although the original Orbiting Astronomical Observatory OAO craft had failed in its 1966 mission, Orbiting Astronomical Observatory 2 ... more quickly than astronomers had previously believed. Orbiting Astronomical Observatory 2 OAO 2 successor craft included Orbiting Astronomical Observatory 3 OAO 3 and NASA’s Hubble Space Telescope HST . Following the Orbiting ...

... spectral regions. Dr. Newell explained that "the intensive investigations by NASA of Orbiting Astronomical Observatory OAO -I program development, test, and operations history have resulted in design and program modifications directed ... been delayed . . . the scientific goals of these missions will be accomplished . . . and Orbiting Astronomical Observatory OAO will continue to be the backbone of the NASA space astronomy program. . . .' ''(Testimony)'' Successful 15 ...

... an old quasar a few million light years away." Full impact of Orbiting Astronomical Observatory OAO II data would not be felt for couple of years. "Some theories on cosmology will ... as we thought and are burning hydrogen at a very rapid rate." Orbiting Astronomical Observatory OAO data thus far provided argument against steady-state theory of universe which maintained universe always ... requirement of one minute of arc by factor of two. "A subsequent Orbiting Astronomical Observatory OAO will be 100 times more stable." ''(NASA Release 69-51; Lannan, W Star, 4/4 ...

... April 10. First of four spacecraft scheduled for NASA's Orbiting Astronomical Observatory OAO program, Orbiting Astronomical Observatory OAO I largest, heaviest, and most electronically complex unmanned spacecraft ever developed by US ... the electromagnetic spectrum. Through its complex ground command spacecraft attitude control system, Orbiting Astronomical Observatory OAO I would be aimed at individual objects in space with precision never before attained by ...

... failed, NASA officials at Kennedy Space Center KSC announced: "Overheating of the Orbiting Astronomical Observatory OAO . primary battery, a problem which became critical late yesterday, has resulted in complications leading to ... before satellite had failed it had demonstrated a key maneuver of the Orbiting Astronomical Observatory OAO program by successfully locking into a series of stars for precise aiming. Orbiting Astronomical Observatory ...

... L Mitchell, Director of Physics and Astronomy in OSSA, and Joseph Purcell, Orbiting Astronomical Observatory OAO Project Manager at Goddard Space Flight Center GSFC , for their contributions to Orbiting Astronomical Observatory ... , special award, for leadership in solid-state physics. Without solid-state circuitry, Orbiting Astronomical Observatory OAO II would not have been possible. Additional awards were presented to 13 persons from Government ...

... burn. Failure investigation board would be established by Langley Research Center LaRC . Primary objective of OAO-B was to obtain moderate resolution spectrophotometric data in UV bands between 1100 and 4000 ... emission and reflection nebulas, and spectral energy distribution of normal stars, galaxies, and intergalactic media. OAO-B at 2123 kg (4680lbs) was largest U.S. satellite to date and carried world ...

... . and other countries to propose additional uses of data from Oao 2 Orbiting Astronomical Observatory (launched Dec. 7, 1968) and OAO-C (Oao 3 when launched), scheduled for launch in late summer 1972 ... and three spectrophotometers to study stars, galaxies, and nebulae in ultraviolet portion of spectrum) and OAO-C Princeton experiment package (81-cm 32-in reflecting telescope to study effects of interstellar ...

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