SWAP onboard PROBA2: An Innovative EUV Imager Designed for Space Weather

Details SWAP onboard PROBA2: An Innovative EUV Imager Designed for Space Weather SWAP onboard PROBA2: An Innovative EUV Imager Designed for Space Weather

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008espm...122.116d&link_type=abstract

"12th European Solar Physics Meeting, Freiburg, Germany, held September, 8-12, 2008. Online at http://espm.kis.uni-freiburg.de/,

Physics

Scientific paper

PROBA2 (PRoject for OnBoard Autonomy) is an ESA micro-satellite that is being prepared for launch in 2009. Its primary goal is the demonstration of new technologies in the space environment. Furthermore, the satellite carries an ambitious suite of both in-situ and remote sensing instruments for monitoring space weather, despite the modest onboard resources. Both the spacecraft and the remote sensing instruments are mainly developed within Belgium.
One of the main instruments, SWAP (Sun Watcher with APS detectors and image Processing), is a compact EUV imager. It carries the first APS detector with an EUV sensitive scintillator coating to be flown in orbit. In addition to the new detector, the PROBA2/SWAP design is innovative in the sense that the instrument will make heavy use of on-board data processing and autonomous operations. These will range from automatic off-pointing and tracking of appropriate solar events, to pre-downlink data prioritisation, and feature and event recognition procedures.
We discuss the first results of the SWAP pre-flight calibration and the strengths and weaknesses of the instrument [2]. With a narrow spectral bandpass centred around 17.4nm, a FOV of 54 arcmin and an image cadence of 1 min, its design is ideal for monitoring most CME associated phenomena on the solar disk and close to the limb.
[1] Defise J., Halain J., Berghmans D., et al. 2007, In: Proc. SPIE, 6689, 66890S
[2] De Groof A., Berghmans D., Nicula B., et al. 2008, Solar Phys. 249, 147-163

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