segmented mirror

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• Segmented mirror — A segmented mirror is an array of smaller mirrors designed to act as a single, larger mirrored surface, usually used in large telescopes. Because current monolithic mirrors cannot be constructed larger than about eight meters in diameter, the use …   Wikipedia

• Deformable mirror — A deformable mirror can be used to correct wavefront errors in an astronomical telescope …   Wikipedia

• Primary mirror — A primary mirror (or primary) is the principal light gathering surface of a reflective telescope. For most of astronomy s history, primary mirrors used to be monolithic blocks of glass or other material, curved to exact shapes and coated with a… …   Wikipedia

• Jerry Nelson (astronomer) — Jerry Nelson Born 1944 (age 66–67) Los Angeles County, California Residence …   Wikipedia

• Cophasing — In astronomy, the term cophasing or phasing describes the process of controlling the individual segments in a segmented mirror or a telescope so that the segments form a larger composite mirroring surface. Cophasing implies precise, active… …   Wikipedia

• Overwhelmingly Large Telescope — Organization European Southern Observatory Wavelength In …   Wikipedia

• Thirty Meter Telescope — The Thirty Meter Telescope (TMT) will be a ground based astronomical observatory with a 30 metre (98 foot) diameter segmented mirror capable of observations from the near ultraviolet to the mid infrared (0.31 to 28 micrometres). An adaptive… …   Wikipedia

• Advanced Technology Large-Aperture Space Telescope — The Advanced Technology Large Aperture Space (ATLAS) Telescope [ What Will Astronomy Be Like in 35 Years? Astronomy magazine, August, 2008] is a proposed 8 to 16 meter (320 to 640 inch) optical space telescope that if approved, built, and… …   Wikipedia

• Extremely large telescope — An extremely large telescope (ELT) is a telescope of more than 20 m diameter. [See title of http://www.astro opticon.org/fp5/skelcase.html and section 1 of http://www.aao.gov.au/instrum/ELT/ELTroadmap040917.pdf] There are currently ten such… …   Wikipedia

• Astrophotography — An image of Orion s Belt composited from digitized black and white photographic plates recorded through red and blue astronomical filters, with a computer synthesized green channel. The plates were taken using the Samuel Oschin Telescope between… …   Wikipedia

• Association of Universities for Research in Astronomy — The Association of Universities for Research in Astronomy (AURA) is a consortium of universities and other institutions that operates astronomical observatories and telescopes. Centers* Gemini Observatory managed by AURA for an international… …   Wikipedia