Investigation of SL 1115 X-ray telescope

A polished Kanigen coated beryllium mirror to be used in a glancing incidence X-ray telescope was evaluated. X-ray photographs of the image of a standard high resolution test target were recorded at 8.34 A and the focal plane of the telescope was determined. Reflection efficiency data was obtained using proportional counters and sources at wavelengths of 8.34, 13.3, and 44 A. These data were compared with similar data taken with another metal mirror. The results of the comparison are that the mirror tested in this program shows better resolution and less scattering than the other mirror previously tested. This mirror was chosen as the flight mirror for the SL 1115 X-Ray Telescope to fly on a Skylark sounding rocket. Also, a position sensitive detector placed in the focal plane of the SL 1115 X-Ray Telescope (flight payload) was successfully calibrated using a 10 arc second point source and at wavelengths of 8.34, 13.3, 27, and 44 A.