Light-Gathering Power (Light Grasp)

Details Light-Gathering Power (Light Grasp) Light-Gathering Power (Light Grasp)

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000eaa..booke4794.&link_type=abstract

"Encyclopedia of Astronomy and Astrophysics, Edited by Paul Murdin, article 4794. Bristol: Institute of Physics Publishing, 2001

Astronomy and Astrophysics

Astrophysics

Instrumentation And Observational Techniques, Astronomical Instrumentation

Scientific paper

A measure of the amount of light collected and brought to a focus by a telescope. The amount of light collected is proportional to the surface area of the collector (objective or primary mirror) and so is proportional to the square of the aperture. For example, a telescope with an aperture of 2 m will collect four times as much light as a telescope with an aperture of 1 m....

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