AAS 201st Meeting, January, 2003
Session 82. Planning for Future Missions: Radio to X-Ray
Poster, Wednesday, January 8, 2003, 9:20am-6:30pm, Exhibit Hall AB

[Previous] | [Session 82] | [Next]

[82.12] Thin shell plastic optics: Application to hard X-ray telescopes

H. W. Schnopper (Smithsonian Astrophysical Observatory), M. Barbera (Osservatorio Astronomico di Palermo Giuseppe S. Vaiana), E. H. Silver, S. S. Murray (Smithsonian Astrophysical Observatory)

We present new results from a program to develop large area X-ray telescopes that are made from thin plastic shells. We use multi-shell cylindrical lenses in a point-to-point configuration to form full aperture images of the small focal spot in an X-ray tube on a microchannel plate detector. The image data are analyzed to yield radial profiles and encircled energy curves. The derived parameters (FWHM and HEW) can be extrapolated to the case of a telescope that is a conical approximation to Wolter 1 optics. The plastic shells can be coated with suitable mono- or multilayers that allow for a wideband coverage of X-ray energies. Our current program is focused on the development of a large area, hard X-ray telescope for a balloon payload (B-MINE). Our goal is to detect the 68 and 78 keV 44Ti lines from the CAS-A supernova remnant. The B-MINE microcalorimeter detector has a 50 eV (FWHM) energy resolution and almost no internal bakground. This combination of a low background and a narrow FWHM detector allows us to distinguish between narrow and broad emission lines. We use the SAX CAS-A results to predict a B-MINE detection of 70 sigma at 68 keV.

[Previous] | [Session 82] | [Next]

Bulletin of the American Astronomical Society, 34, #4
© 2002. The American Astronomical Soceity.