Gemini project

Gemini North Observatory/CTI Mode-locked SFG Laser. CTT is developing the first commercial solid-state Na LGS system. It will be installed on the center section of the 8-m Gemini North telescope, with the output beam relayed to a projector behind the secondary mirror. The projected beam is required to be 10-20 W power, with M2 < 1.5. The architecture is based on sum-frequency mixing two mode-locked solid-state Nd YAG lasers. The mode-locked format provides significantly higher peak intensity than CW, enabling more efficient SFG conversion. The laser is also free of the thermal and intensity transients that are inherent in the macro pulse format. The chosen... 

Grimwood, J. M. and Hacker, B. C. 1969. Project Gemini Technology and operations a chronology (part 1). Washington, D.G. Scientific and Technical Information Office, NASA. 

Hacker, B. G. and Alexander, C. C. 1977. On the shoulders of titans A history of Project Gemini. Washington, D.C. Scientific and Technical Information, NASA. 

Project Gemini launched a capsule for two astronauts. Gemini s ten flights provided experiences with space walks, docking, weightless conditions, and spacecraft recovery that made the Apollo missions to the moon possible. 

Project GEMINI (1962-1966), the second US program for manned space flight (with a two-seater spaceship), the aim was to develop and master extra-vehicular activity, which was not possible with the Mercury space capsule (Gemini s predecessor). 

During these programs, PME fuel cells and electrolyzers were developed. These first solid membranes were made of sodium polystyrene sulfonate, and would be replaced by Nafion, which was discovered by DuPont in the same decade. Thus, it was in 1966 that the very first solid-polymer electrolyte (SPE) electrolyzer was built by General Electric (GE) for Project GEMINI to produce oxygen on board the spacecraft. 

In a recent survey Cap Gemini (2005) surveyed a number of projects where PSA solutions had been used. On each solution the following four areas were... 

Cap Gemini (2005), Trends in Project Performance Improvement, Capgemini Netherlands, Utrecht, Summer 2005. 

In 1961, President John F. Kennedy proclaimed a national commitment to land a man on the moon and to return him safely to earth. NASA achieved this goal with three projects Mercury, Gemini, and Apollo. 

Project Gemini showed the capability of conducting space flights up to two weeks in duration. This project also showed that it was possible for a spacecraft to rendezvous with other orbiting vehicles and to precisely and safely enter the atmosphere and land at a preselected point on earth. Gemini involved 10 flights with two-man crews. 

Our current instrumentation projects include (i) KCstm, a dedicated 2/on survey camera based on a 256x256 HgCdTe NICMOS 3 detector from Rockwell International (ii) Gemini, a general purpose l-5 mi imaging system... 

MATT MOUNTAIN and DAVID ROBERTSON Gemini 8-M Tehscopet Project 950 North Cherry Avenue PO Box S67St Tucson, Arizona 85796... 

Adaptive Optics on 8 meter telescopes can offer significant scientific gains at near IR wavelengths. As part of the Science Requirements GEMINI will be implementing a facility Adaptive Optics System on the Mauna Kea telescope as part of the construction phase of the project. 

Robertson, D.J., EUerbroek, B.L., McGonegal, R.J., Mountain, C.M., Osdunann, J. and Pompea, S.M., Adaptive Optics Modeling for the GEMINI 8-m Telescopes Project, ICO-16 satellite conference on Active and Adaptive Optics, In Print. 

---