ASToptics CNC Guide Scope Rings 80 mm This pair of 80 mm CNC guide-scope rings provides adjustable support for a guide telescope with an outside tube diameter of 40–70 mm. Six adjustment points across the pair allow the guide telescope to be aligned relative to the main optical tube.
Manufacturer model: ASToptics CNC Guide Scope Rings 80 mm · Specifications checked against manufacturer data on 2026-11-03
This pair of 80 mm CNC guide-scope rings provides adjustable support for a guide telescope with an outside tube diameter of 40–70 mm. Six adjustment points across the pair allow the guide telescope to be aligned relative to the main optical tube.
Construction and mounting
The rings are made from aluminium. The manufacturer lists 220 g for the pair, expressed as two 110 g rings. The quoted guide-tube range describes the usable external tube diameter, rather than the telescope’s clear aperture.
Compatibility notes
Published weight is for the pair. Select using guide-tube outside diameter, not objective aperture.
Additional specifications
Alignment
Six-point adjustment across the ring pair
Pair weight (g)
220
Individual ring weight (g)
110
57831
Data sheet
Guide tube outside diameter
40–70 mm
Material
Aluminium
Model
ASToptics CNC Guide Scope Rings 80 mm
Nominal ring size (mm)
80
Quantity
2
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ASToptics CNC Guide Scope Rings 80 mm This pair of 80 mm CNC guide-scope rings provides adjustable support for a guide telescope with an outside tube diameter of 40–70 mm. Six adjustment points across the pair allow the guide telescope to be aligned relative to the main optical tube.
Manufacturer model: ASToptics CNC Guide Scope Rings 80 mm · Specifications checked against manufacturer data on 2026-11-03
