And here I thought you meant the REAL Takahashi astrograph, the FSQ106
At f/3.6 which is what I will be operating the FSQ at (had it a few weeks, and it has been shotty ever since!), I have approx. 40 microns of critical focus zone to deal with. NO human can do that effectively/repeatably, so I bought the Sharpsky Pro system, with custom collar done by Dave for the Tak size reduction pinion. I now have to complete the mounting arrangement for it - gone a bit different with this
Until I get my AP Mach 1 - whenever they make one - I will use my NEQ6 (damn it!).
Epsilons are incredible instruments. Have fun with it! Such a tiny beast, but so damned impressive!