I noticed there was a question on the Tele-Vue Para-Corr. A person might want to consider the much less expensive Baader MPCC that is configured for visual or photo use in f/4 to f/6 reflectors by making use of various T-2 system accessories. The T-2 mount allows use with all but the largest 2" EP's that have field stops bigger than T-2 size.
A simple $20 T-ring adapter allows use with a 35mm SLR camera. You screw it onto a T-2 Click-Lock for use with 1.25" EP's. It screws directly onto 2" EP's. VArious T-2 extenders give the right insertion optical length for 1.25" EP's. Usually a 15mm extender between MPCC And Click-Lock.
Phil
A simple $20 T-ring adapter allows use with a 35mm SLR camera. You screw it onto a T-2 Click-Lock for use with 1.25" EP's. It screws directly onto 2" EP's. VArious T-2 extenders give the right insertion optical length for 1.25" EP's. Usually a 15mm extender between MPCC And Click-Lock.
Phil