Angstrom aberration Property of an optical system that causes an image to have certain easily recognizable flaws. Aberrations are caused by geometrical factors such as the shapes of surfaces, their spacing, and alignments. Image problems caused by factors such as scratches or contamination are not called aberrations. A hole in the primary allows the image plane to be located behind the large mirror. POCC Payload Operations Control Center polarity Light magnetized to move along certain planes.
Polarimetric observation studies the light moving along a given plane.
To boost a satellite back into its original orbit after the orbit has decayed because of atmospheric drag reflecting telescope Telescope that uses mirrors to collect and focus incoming light refracting telescope Telescope that uses lenses to collect and focus light resolution Ability to discriminate fine detail in data. In an image, resolution refers to the ability to distinguish two objects very close together in space. A modern optical design for two-mirror reflecting telescopes. It is a derivative of the Cassegrain concept in which the primary mirror has a hyperbolic cross-section. In a two-mirror reflecting telescope, the secondary mirror sits in front of the larger primary mirror and reflects light to the point at which it will be detected and recorded by an instrument.