iOptron CW Extension Bar for C40/G45/C60/C70/etc. (8026) Cleaning The 55mm focal length has

The 55mm focal length has the largest true field possible for 2" eyepiece holders -3 times the true field area of any 1¼" eyepiece

The adapter adds an optical thickness of 0

the Regal M2 is optimized to provide the sharpest images available

extra-low-dispersion lanthanum glass elements to produce a well-balanced image with minimal aberrations

3nm) and OIII (500

iOptron CW Extension Bar for C40/G45/C60/C70/etc. (8026) Cleaning The 55mm focal length hasThis is an original replacement counterweight shaft (w o CW safety screw) and the extension bar for the iEQ45 Pro iEQ45 GEM45. This is also the extension bar for the CEM40 60 70 GEM45 mounts. Attach to the CW shaft and will create more counterbalance torque. Specifications Diameter: 28mm Net Length: 10 inches Length (including threads): 11 inches (280mm)