Blue Fireball 2" Spacer Ring with 0.25" Extension S-2A
Key specifications
| Accessory type | Adapter |
|---|---|
| Weight | 0.006 kg |
| Path length | 6.4 mm |
All specifications
| Interface | M48x0.75 female to M48x0.75 male |
|---|
About
2" extension ring with M48x0.75 filter threads (female one side, male the other) providing 0.25" (6.4 mm) of spacing, for parfocalising eyepieces or changing a reducer's factor. Discontinued.
Where to buy
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