ASToptics CNC Guide Scope Rings 102 mm with Riser Blocks This pair of 102 mm CNC guide-scope rings provides adjustable support for a guide telescope with an outside tube diameter of 55–102 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 102 mm with Riser Blocks · Specifications checked against manufacturer data on 2026-11-03
This pair of 102 mm CNC guide-scope rings provides adjustable support for a guide telescope with an outside tube diameter of 55–102 mm. Six adjustment points across the pair allow the guide telescope to be aligned relative to the main optical tube.
The rings are made from aluminium. The manufacturer lists 270 g for the pair, expressed as two 135 g rings. The supplied riser blocks add 18 mm of height beneath the rings.
ASToptics manufacturer documentation
The manufacturer prose explicitly specifies 55 mm minimum and 102 mm maximum; the technical table transposes the min/max labels. The range follows the prose. Pair weight is published as 2 × 135 g.
| Alignment | Six-point adjustment across the ring pair |
|---|---|
| Pair weight (g) | 270 |
| Individual ring weight (g) | 135 |
| Riser block height (mm) | 18 |
Data sheet
ASToptics CNC Guide Scope Rings 102 mm with Riser Blocks This pair of 102 mm CNC guide-scope rings provides adjustable support for a guide telescope with an outside tube diameter of 55–102 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 102 mm with Riser Blocks · Specifications checked against manufacturer data on 2026-11-03
