Assertion: telescope's mirror | /r/CapableOf | reflect the light
Facets:
value: through a hole in the primary
type: MANNER
value: back down
type: MANNER
value: to the side of the telescope
type: TRANSITIVE-OBJECT
value: to a common point
type: TRANSITIVE-OBJECT
value: back to a focus
type: OTHER
value: almost all
type: DEGREE
value: to a flat secondary mirror
type: TRANSITIVE-OBJECT
value: onto a detector
type: TRANSITIVE-OBJECT
Source sentences:
text: These are a) the prime focus, where the detector is simply placed at the prime focus of the mirror; b) the Newtonian, where a small, flat mirror reflects the light out to the side of the telescope; c) the Cassegrain, where the focus is located behind the plane of the primary mirror through a hole in its center and d) the Coudè, where the two flat mirrors provide a long focal length path as shown.
text: A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image.
text: The reflecting telescope leverages a large and concave parabolic mirror to collect and focus light to a flat secondary mirror.
text: A flat secondary mirror reflects the light to a focal plane at the side of the top of the telescope tube.
text: It has a parabolic primary mirror, and a hyperbolic secondary mirror that reflects the light back down through a hole in the primary.
text: The Nasmyth design is similar to the Cassegrain except the light is not directed through a hole in the primary mirror; instead, a third mirror reflects the light to the side of the telescope to allow for the mounting of heavy instruments.
text: The mirror then reflects the light out an opening in the rear of the instrument where the image is formed at the eyepiece.
text: The spherical mirror then reflects the light onto a detector that records the image; here the detector is photographic film.
text: The "classic" Cassegrain has a parabolic primary mirror and a hyperbolic secondary mirror that reflects the light back down through a hole in the primary.
text: The name of this type of instrument is derived from the fact that the primary mirror reflects the light back to a focus instead of refracting it.
text: A mirror reflects the light, so the material that it is made from does not have to be transparent, and infrared and ultraviolet light reflects equally well.
text: A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light and form an image.
text: Polished lenses and mirrors were placed inside the tubes to magnify images and reflect light.
text: Because the primary mirror focuses light to a common point in front of its own reflecting surface almost all reflecting telescope designs have a secondary mirror, film holder, or detector near that focal point partially obstructing the light from reaching the primary mirror.