Tilting collimator for eyepiece alignment

Adjustment device for the focuser of GSO RC telescopes for 6" and 8" apertures

• Enables even finer adjustment of GSO RC telescopes - costs only 15 mm of optical path!
• Enables collimation of refractor lenses - for DIYers
• Thread connection M90x1 internal/external

Every conventional RC telescope allows independent adjustment of the primary mirror cell, secondary mirror and focuser. With GSO, however, the primary mirror cell and focuser are connected to each other. When the primary mirror is adjusted, the focuser automatically adjusts itself. The result is minimal misalignment of the focuser. The well-corrected field of the RC is not used optimally.

When is the adjustment device useful and when is it not? When using DSLR cameras with half-frame chips or CCD cameras with chips up to approx. 23 mm in diameter, you will not encounter any problems in the field. Observations can also be carried out without restriction. However, if you use DSLR cameras with full-frame chips or high-resolution cameras with chips from approx. 23 mm in diameter, you will notice an increase in sharpness in the corners due to the individual correction of the focuser.