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Anyone using a Tak 100mm fluorite doublet for imaging?
There seems to be several models of 100mm fluorite doublets from Tak. I don't know what the differences are or why there are so many variants but I am curious about their performance.
The original FS series were good visual instruments but for imaging they lacked.
Are these newer Tak doublets the same or have they improved the colour correction to be similar to an FPL53 triplet?
Greg.
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