Abstract

An aplanatic total reflection telescope for use in the soft x-ray region has been constructed and tested in this laboratory. The telescope has a collecting area of 2 cm<sup>2</sup>, an angular resolution of 1 min of arc, and a field of view of 40 min of arc. The focal length is 64 cm. The grazing angle of incidence on the telescope surface is about 1° for paraxial radiation. This results in an efficiency of reflection of 0.2% in the 8–12 Å region and 5.0% at 44 Å. These characteristics make it particularly suited to the study of celestial x-ray sources from rocket- and satellite-borne instrumentation.

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  1. R. Giacconi and B. Rossi, J. Geophys. Res. 65, 773 (1960).
  2. H. Wolter, Ann. Physik 10, 94 (1952).
  3. Paper presented by J. C. Lindsay at the I. A. U. Symposium No. 23, "Astronomical Observations from Space Vehicles," Institute d’Astrophysique, Liège, Belgium, 17–20 August 1964.
  4. P. Kirkpatrick, "Grazing-Incidence Telescopic Systems" in H. Pattee, et al., Third International Symposium on X-Ray Optics and X-Ray Micro-Analysis, Academic Press, Inc., New York, 1964).
  5. R. W. Hendrick, J. Opt. Soc. Am. 47, 165 (1957).

Giacconi, R.

R. Giacconi and B. Rossi, J. Geophys. Res. 65, 773 (1960).

Hendrick, R. W.

R. W. Hendrick, J. Opt. Soc. Am. 47, 165 (1957).

Kirkpatrick, P.

P. Kirkpatrick, "Grazing-Incidence Telescopic Systems" in H. Pattee, et al., Third International Symposium on X-Ray Optics and X-Ray Micro-Analysis, Academic Press, Inc., New York, 1964).

Lindsay, J. C.

Paper presented by J. C. Lindsay at the I. A. U. Symposium No. 23, "Astronomical Observations from Space Vehicles," Institute d’Astrophysique, Liège, Belgium, 17–20 August 1964.

Rossi, B.

R. Giacconi and B. Rossi, J. Geophys. Res. 65, 773 (1960).

Wolter, H.

H. Wolter, Ann. Physik 10, 94 (1952).

Other (5)

R. Giacconi and B. Rossi, J. Geophys. Res. 65, 773 (1960).

H. Wolter, Ann. Physik 10, 94 (1952).

Paper presented by J. C. Lindsay at the I. A. U. Symposium No. 23, "Astronomical Observations from Space Vehicles," Institute d’Astrophysique, Liège, Belgium, 17–20 August 1964.

P. Kirkpatrick, "Grazing-Incidence Telescopic Systems" in H. Pattee, et al., Third International Symposium on X-Ray Optics and X-Ray Micro-Analysis, Academic Press, Inc., New York, 1964).

R. W. Hendrick, J. Opt. Soc. Am. 47, 165 (1957).

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