1,720,973 research outputs found
Far-Ultraviolet Stellar Emission Measurements from UVSTAR
No full textWe present UVSTAR and some of the relevant science results from the three UVSTAR missions performed so far: on STS69, STS85 and STS95. In particular we discuss hot sub-dwarf stars, Beta Lyr and Epsilon CMa (500 - 1250 Angstrom) observations
The Owl/Airwatch Experiment: the Focal Plane Detector
No full textWe propose to observe Extensive Air Showers (EAS) produced by Extreme Energy Cosmic Rays (EECR) with an opto-electronic instrument mounted on a satellite (Owl/Airwatch concept, OA). EAS will be detected by measuring the fluorescence produced by their interaction with atmospheric N2. One key element of the system is the detector. The requirements of large sensitive area and curved surface to match the focal plane design can be satisfied by using a mosaic of detectors. Commercial detectors exist with the required single photon sensitivity, pixel size, gain, fast response time, low intrinsic noise, weight and dimensions. Other characteristics still require a dedicated R&D program with the industry in order to get the final detector
Background measurement with UVSTAR
No full textWithin the AIRWATCH collaboration, we propose to measure the Earth night side background with high accuracy using the UVSTAR instrument from the Shuttle
ISS-VIEW, a Software Tool for External Science Payloads of the International Space Station
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