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Sorry I have not been back to report for a while but I did not have a working camera until last week. That has now been rectified and I have been testing the work on the corrector.
I can happily report that the work done by Stefan to fix the corrector appears to be successful. I still need to do some minor tweaks to collimation, spacing and tilt but there does not appear to be a problem with the corrector anymore.
The image below is of the corners and centre. This is a vast improvement upon what I was facing before. Pity OOUK did not believe me that there was something wrong with their corrector.
Thanks Stefan once again for fixing the problem.
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