I had a request to make an adjustable spacer for an Esprit 150.
It has M62 x 1 female threads on both sides and the optical length is adjustable between 34 and 44mm.
If there is interest, I can add it to my portfolio of adapters on my website at
https://beamtech.com.au/
PS Of course the spacer was for a field flattener rather than a coma corrector. I can't edit the title but the spacer doesn't care whether it is used for spacing a coma corrector or a field flattener.
