I bought an old vintage Russian lens, known as the MTO 11CA, although the photos of it does not seem to match exactly like other MTO 11CA.
I noticed that the lens is out of collimation. I have a Canon Eos M attached via EOS M to M42 adapter, and can see that there is a vague double image in the vertical axis on the best focus. Is there any good way to collimate the old Reflector lens? Any help would surely be appreciated. I can take some photos later if anyone needs to see exactly which one it is if necessary.