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Two kinematic mirror mounts, with mirrors. A mirror mount is a device that holds a mirror. [1] In optics research, these can be quite sophisticated devices, due to the need to be able to tip and tilt the mirror by controlled amounts, while still holding it in a precise position when it is not being adjusted.
PLate OPtimizer, or PLOP is a CAD program used by amateur telescope makers to design primary mirror support cells for reflecting telescopes. It was developed by telescope maker David Lewis, first described in 1999, [ 1 ] and used to simplify calculations needed in the design of mirror support cells. [ 2 ]
A sill plate or sole plate in construction and architecture is the bottom horizontal member of a wall or building to which vertical members are attached. The word "plate" is typically omitted in America and carpenters speak simply of the "sill". Other names are rat sill, ground plate, ground sill, groundsel, night plate, and midnight sill. [1 ...
In theater and film, a cyclorama (abbreviated cyc in the U.S., Canada, and the UK) is a large curtain or wall, often concave, positioned at the back of the apse. It often encircles or partially encloses the stage to form a background. The world "cyclorama" stems from the Greek words "kyklos", meaning circle, and "orama", meaning view.