Camera, Wide Field of View, Filters
Sunday, September 03, 2006
A Wide Field of View Camera has been designed and developed that consists of a grazing incidence telescope with a set of three Wolterschwartzchild, gold-coated aluminum mirrors with a microchannel plate detector.
The Cameras detector is located at the mirrors’ focal plane. A focal plane turntable can select one of two detector assemblies. Eight filters are mounted to an aperture wheel in front of the selected detector. A filter is then selected to define the desired wavelength or for background suppression where the background could saturate the detector. A baffle assembly mounted in front of the mirrors prevents scattered solar radiation from entering the mirror apertures.
An UV calibration system, mounted on the mirror support, permits inflight monitoring of detector gain drifts and thermal induced misalignment of the telescope axis. Background electrons reflected by the mirrors into the telescope are deflected away from the detector aperture by a magnetic diverter system. Two particle detectors, a Geiger-Muller tube and a channel electron multiplier, measures the background charged particle flux and provide a signal to switch off the UV detector during passage through high background regions.
Source: Optical Engineering, June 1990
Reference: None Available
Industrial Products
posted by JD52 @ 12:18 AM,
