Digi-T Adapter to EP, you got one ?

Anyone here have a Digi-T adapter for EP ? If you do do you know the thread measure in mm ? Any idea what thread measure is inside a camera T-Ring in mm ??

The actual thread diameter & pitch is listed as 42mm x 0.75

See: https://en.wikipedia.o​rg/wiki/T-mount

The inside clear diameter needs to be at least as wide as the diagonal measure of your image sensor to avoid vignetting in the corners.

For Nikon that's about 28.3mm
For Canon that's about 26.7mm

If you assume a 2mm wall thickness on the t-thread, then the inner diameter is probably about 38mm.
If you use a 2" diameter eyepiece barrel adapter then the barrel is bigger than the t-thread and the barrel doesn't restrict light, but the t-thread will. If you use a full-frame camera you probably need about 43-44mm of clearance (more than a t-thread can offer) and will have vignetting in the corners. If you use an APS-C camera then you're fine.

But if you use a 1.25" focuser then the outer diameter is 31.75mm... assume a 2mm wall thickness and now you're down to 27.75mm.

That size would be big enough (just barely) for a Canon APS-C camera with the 1.25" nosepiece.
Technically the Nikon would get vignetting but you'll probably only get about .25mm per corner (technically not zero... but also not really enough to notice a problem.)

If you have a full-frame camera body then there is a singe-piece camera nosepiece that has the camera mount on the back and the 2" eyepiece barrel to slip into the focuser on your telescope on the front... all machined out of a single piece so it doesn't actually have t-threads (so it doesn't have to restrict the inner diameter down to that narrow size that would cause vignetting.) I bought a "Blue Fireball" brand single-piece prime-focus adapter that had Canon EOS mount on the camera side and a 2" eyepiece barrel size on the telescope side. It provides 47.5mm of clear inner diameter (and a full-frame camera only needs about 44mm ... so it's more than adequate.)

Thanks but all I need is the inside diameter of a Canon T-Ring . Trying to mate a step ring from a 43mm camcorder to a Digi-T adapter and a Celestron Barlow with The adapter connection .

Just found out it will not fit my camcorder . Tested my T-Adapter to see if it would screw into the 43mm threads of my camcorder but too small so I just need a step down ring to make it work .

So found only one place on the internet that had a 43mm stepdown to 42mm ring . Ordered it and got it in less than a full week . Fits my camcorder perfectly and my Celestron T-Adapter/2x Barlow fits perfectly so now when I get a chance I can use my camcorder and try capturing Saturn and Jupiter for a new image again . But also if I wish to try using my camera with T-Ring I can do that also . Now if the high heat being in the 100s will cool down and clouds clear up I might get a chance before it's too late .