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 QE peak value of the ASI2600MC Pro is 80%

AstroSolar must be mounted entirely stress free in order to perform like a high precision plane optical window

Ideal for both visual observation and astrophotography

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)