hey mate
I have the APM 100 ED APO (not the Semi) and love it.
Completely difference experience to cyclops viewing with additional resolving power of two objectives rather than one.
The APM APO is essentially two well corrected doublet scopes put together. I've pushed mine to 110x with no collimation issues. They come collimated to 100x with a Wellenform certificate.
Fit and finish is of a very high quality.
If you are still keen on getting the 100mm Semi APO - I would strongly suggest you consider the smaller 82mm APO as an alternative. Image quality and colour correction will be significantly better than the semi APO.
cheers
Jeelan
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