simple Vixen question

Can anyone tell where the focal plane is with respect to a Vixen 0.62x focal reducer installed in a VMC200L when the telescope is focused to infinity?

I purchased this focal reducer on Astromart. It came with a Japanese description. I figured that a 60mm photo-adapter and a T-ring is what Vixen recommends. Now, I'm perfectly capable of making my own adapters for my own stuff given the necessary information but I couldn't get the position of the focal plane from vixenoptics.com. Alternatively, I asked the thickness of their 60 mm photo-adapter. Apparently, that is also trade secret. Isn't this odd?

Thanks.

I can't answer your question, but the B&H site says this reducer, on a VMC200L, needs the T-ring and the "#3878 Direct Wide Photo Adapter."

hth

sf

How to DIY: Focus on the full or nearly-full Moon (any night this week) & remove eyepiece. Discover focal plane via a white card showing the Moon's projected image. Measure card position when the lunar image is sharp on the white card (adjust by moving the card, do not touch focuser knobs).