iOptron CW Extension Bar for C40/G45/C60/C70/etc. (8026) Cleaning extra-low-dispersion lanthanum glass elements to

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

Ideal for both visual observation and astrophotography

3nm) and OIII (500

The adapter adds an optical thickness of 0

The Celestron NexStar 4SE comes loaded with a database of more than 40

iOptron CW Extension Bar for C40/G45/C60/C70/etc. (8026) Cleaning extra-low-dispersion lanthanum glass elements toThis 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)