plate center

plate center

[′plāt ‚sen·tər]
(astronomy)
The point used as the origin of coordinates for measuring positions of stars on a photographic plate in photographic astrometry, ideally located on the optical axis of the telescope.
References in periodicals archive ?
Mark the shoulder/armscye intersection, the armscye ridge at the plate center and the armscye/side-seam intersection 1" below the plate (10).
Collaborating with Tegna Media on the design and build of broadcast facilities within "Home Plate Center," BeckTV helped with programming, space planning, broadcast system design, broadcast budget development, and system integration to enable a rapid transition to more innovative facilities.
For prevention of the plate displacement as rigid whole under calculation by FEM it were used boundary conditions of absence of lineal (in directions of axis OX and OY) and angular (rotz) displacements of the plate center.
Two identical AE transducers were placed on opposite sides in the plate center.
As a consequence, pressure decays and volumetric shrinkage are definitively different: if the cavity did not deflect in our case the volumetric shrinkage in the plate center would be 5% instead of -3% and the plate would not be over-packed.
In addition, the variation of the distance from the zone plate center to the image point, measured along the direction of the plane wave source, was measured by rotating the zone plate, displacing the feed along the axis of the fixed plane wave and locating the image point.
The existing Plate Center will be equipped as a Hardox Wear Parts Center, offering value added service to the aftermarket.