I have my pre-order in for the new ASI2600MM-Pro and looking forward to using it. I own the 2" EFW and the smaller OAG (not the M68). Will I need the M68 OAG?
for your referen reference https://astronomy-imaging-camera.com/tutorials/best-back-focus-length-solutions-55mm.html
@tech@zwo#42790 thanks, so my original OAG is good to go!
