On April 17, 2012 at JAXA’s Space Research Center in Tsukuba, thermal test models for the soft X-ray calorimeter filter wheels and the laser metrology system for the hard X-ray instrument were attached to the body of the satellite. They were fastened to the Fixed Optical Bench, which resides in the main structure of the satellite. These devices will undergo thermal environment tests throughout the summer of 2012 at the Tsukuba Space Center.
The filter wheel (FW) is designed to allow for regulation of the amount of X-rays falling onto the soft X-ray spectrometer. In addition to the various filters to regulate the X-ray brightness, an X-ray generating system to be used to calibrate the energy scale of the detectors will be mounted on an aluminum wheel-shaped plate. The wheel will be rotated by a motor to change the modes in-flight. The University of Geneva in Switzerland, the Space Research Organization of the Netherlands (SRON) and the European Space Agency (ESA) have responsibility for building the filter wheel. The laser metrology system (the Canadian Astro-H Metrology Systems, CAMS), is a laser-imaging module which uses a mirror with a high-efficiency reflectivity in order to measure the on-orbit distortions in the Fixed Optical Bench and the Extendable Boom. This system had been developed by the Canadian Space Agency (CSA). The Astro-H project is not limited to just Japanese universities and research institutes. Nations from both North America and across Europe are also participating in the mission!
- The University of Geneva: http://www.unige.ch/
- the Space Research Organization of the Netherlands(SRON): http://www.sron.nl/
- the European Space Agency(ESA): http://www.esa.int/
- Canadian Space Agency(CSA): http://www.asc-csa.gc.ca/eng/default.asp