Quote:
Originally Posted by Sunfish
I've been meaning to compute the sensitivity of the system to secondary tilt one of these days. I'll post the results if (and when) I ever get around to it.
John
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No need it has been done - see
https://www.telescope-optics.net/SCT...tions.htm#than
Bottom line is that the classic Meade/Celestron SCT is relatively insensitive to decentering errors (ie lateral shift) of corrector + secondary. What it IS sensitive to is a tilt error in the secondary - as every SCT owner will know.