Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apru11004k&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
A new generation of hard X-ray telescopes using focusing optics are poised to dramatically improve the sensitivity and angular resolution at energies above 10 keV to levels that were previously unachievable by the past generation of background limited collimated and coded-aperture instruments. Active balloon programs (HEFT, InFocus), possible Explorer-class satellites, and major X-ray observatories (Con-X, XEUS) using focusing optics will play a major role in future observations of a wide range of objects including young supernova remnants, active galactic nuclei, and galaxy clusters. These instruments call for low cost grazing incidence optics coated with depth-graded multilayer films that can be nested to achieve large collecting areas. To accomplish the ultimate goals of the more advanced satellite missions, lightweight and low-cost substrates with angular resolution below 20 arcsec and multilayer coatings with high reflectivities at energies up to 200 keV must be developed. Recent experimental results will be presented on the development of improved substrates, new multilayer coatings, and precision mounting techniques. The current status on the construction of the HEFT optics will also be reported.
Christensen Finn
Craig Bill
Hailey Chuck
Koglin Jason
Windt David
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