093479

Single reflection data is seen as a very useful tool in diagnosing the X-ray telescope parameters. Comparison of data with simulations will allow evaluation of the accuracy of the telescope system within the calibration and hopefully lead to insights in the absolute flux calibration. Typical single reflections seen are those from the hyperbola (those from the parabola are too close) which originate from virgul 20. - 80. off-axis. Archival data shows clear reflection arcs are obtained from off-axis point sources such as Sco X-1 which due to its brightness is a useful target in this regard. The pointings will form a cross centred on Sco X-1 with four arms each containing a set of seven pointings at offset angles of 79.0 71.5 64.0 56.5 49.0 41.5 and 34.0 arcmins respectively. [truncated! Please see actual data for full text]