Product series:
The telescope manufacturer William Optics offers very high-quality apochromatic and achromatic refractors which are very well suited to visual observation, and especially to astrophotography.
William Optics
Tube clamps Cat Mounting Ring
$ 73.00
ready for shipping in 3-5
weeks
William Optics
Tube clamps Mounting Ring and CAT Handle Bar Kit for ZenithStar 61 version I
$ 135.00
ready for shipping in 3-5
weeks
William Optics
Tube clamps 90mm
$ 198.00
ready for shipping in 3-5
weeks