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ROSAT Guest Observer Facility

How good are the aspect solutions believed to be?

(11/10/92)


The aspect solutions are screened to exclude intervals where RA/Dec errors are greater than 1", and if the attitude drifts from a nominal pointing by more than 15'. A systematic error of approximately 10" remains due to ground calibration procedures. A corrector lens was introduced to simulate orbit vacuum, and a mounting error of 10 microns can explain the residual 10" pointing error. Solutions are being worked on to improve the aspect.


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This file was last modified on Friday, 27-Jul-2001 14:59:27 EDT

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