vlst workshop; stsci february 2004 1 uv astronomy in the post- galex era noah brosch wise...
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UV astronomy in the UV astronomy in the post-GALEX erapost-GALEX era
Noah BroschNoah BroschWise ObservatoryWise ObservatoryTel Aviv UniversityTel Aviv University
IsraelIsrael
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Missions describedMissions described
TAUVEX on GSAT-4TAUVEX on GSAT-4 Israeli mission on Indian geo-sat Israeli mission on Indian geo-sat
(2005/6)(2005/6)UVIT on ASTROSATUVIT on ASTROSAT
UV/optical imagers on multi-spectral UV/optical imagers on multi-spectral astronomy mission of India (2007/8)astronomy mission of India (2007/8)
WSO/UVWSO/UV International large space telescopeInternational large space telescope for for
UV astronomy (2008+)UV astronomy (2008+)
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GSAT-4 and TAUVEXGSAT-4 and TAUVEX TAUVEX: from SRG TAUVEX: from SRG
to GSAT-4to GSAT-4 Mode changed Mode changed
from pointed from pointed observations to sky observations to sky scansscans
Three-telescope Three-telescope array: 20-cm & 1 array: 20-cm & 1 degree FOV, four degree FOV, four filters/telescopefilters/telescope
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The GSAT-4 satelliteThe GSAT-4 satellite
The GSAT-4 Spacecraft is an Experimental Technology Demonstrator The GSAT-4 Spacecraft is an Experimental Technology Demonstrator for Advanced Satellite Communication Systems. TAUVEX is its onlyfor Advanced Satellite Communication Systems. TAUVEX is its only scientific payloadscientific payload
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TAUVEX on GSAT-4TAUVEX on GSAT-4
GSAT-4 consists of:GSAT-4 consists of:
Ka-Band Regenerative Ka-Band Regenerative and Bent Pipe and Bent Pipe transponder transponder
Geostationary Geostationary Navigation Payload Navigation Payload
Scientific Payload Scientific Payload (TAUVEX)(TAUVEX)
Bus System Bus System experimentsexperiments
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TAUVEX on GSAT-4TAUVEX on GSAT-4
TAUVEX on rotating TAUVEX on rotating platformplatform
Constant-Constant-declination scansdeclination scans
Dedicated high-Dedicated high-speed telemetry speed telemetry link (always link (always available)available)
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Expected performanceExpected performance• Assume low straylight
(best case)• Performance with SF-2
(210+/-20 nm) for different spectral types
• Lines for monochromatic mag. 17, 18, 19, 20, 21 star
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ASTROSAT is an Indian-national scientific satellite to be launched in 2007.Polar orbit (sun-synchronous) offers long integrations only in CVZ.Operation to be targeted to interesting sources.
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UVIT to operate in conjunction with the X-raytelescopes
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World Space World Space Observatory/UVObservatory/UV
WSO/UV: 1.7-meter telescope at 2nd Lagrangian point. Its mission: high spectral resolution UV spectroscopy, combined withhigh-angular-resolution imaging.Image quality: 80% enclosed energy=0”.35@633 nm & 0”.07@122 nm Main instruments: 2xHIRES (R=55000)+one long slit R~1000 spectrograph.
http://wso.vilspa.esa.es
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WSO/UV: imaging focal WSO/UV: imaging focal planeplane
Six imaging devices: four for UV and two for optical. Wide field=5 arcmin@ 0”.15/pixel (f/10); high resolution=1 arcmin FOV @ 0”.03/pixel (f/50).Integral filter wheels (six filters+empty position per camera)
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When will WSO/UV happenWhen will WSO/UV happen??
T170M telescope@ Lavotchkin