EOS R8 Back focus distance

[Tony1965]

Does anyone know the back focus on the R8?

[jrhoffman75]

Hi Tony. Just curious as to why you want to know this? (Always looking to learn.)

[Tony1965]

So I can attach it to my telescope for Astrophotography. 

[Ian_D_Head]

New around here, hope you accept an answer from the UK 🙂

It's 20mm

[Tony1965]

Yea

[Ian_D_Head]

Realised it has now been answered earlier. But it gave me an excuse for my first post.👍