1

standard 25mm eyepiece

with draw tube about 25% extended

2

T-adapter and EOS T-ring replacing the eye-piece

3

EOS 100D attached to the T-adapter/ring

The grey line shows (very approximately) where the prime focus is

4

and this shows all the existing eyepiece hardware removed, and the EOS positioned such that the focal plane is at the prime focus

5

and for completeness, here are the 25mm, 9mm and T-adapter/ring laid out