The Rainwater Memorial Calibration Facility for X-Ray Optics
Figure 9
Front view of coarse aperture plate (a) and fine aperture plate (b). The plates consist of 4 mm of lead sandwiched with Aluminum. (a) Bowtie is shown which can be used to select between 15° and 60° of the azimuthal range (b) Fine aperture plate to select the radial range(s) and more finely define the azimuthal extent to sextants. The plate mounts directly to the optic.
