Blue Fireball 1.25" Spacer Ring with 0.75" Extension
Ships by Next Business Day
Contiguous US Customers:
All items we sell ship for free within the Contiguous US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.
US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.
International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.
Description/Uses:
- 1.25" extension ring/barrel spacer
- Provides 0.75" (19.1mm) of spacing
- Allows you to securely set or vary the spacing between 1.25" components
- Useful for making eyepieces parfocal or to change the reduction factor of focal reducers
- Has standard 1.25" filter threads (male on one side and female on the other)
Features:
- Precision machined from aluminum and black anodized
- Threaded to accept standard 1.25" astronomy filters
Specifications:
- Total Length = 0.89" (22.05mm)
- Extension Provided = 0.75" (19.05mm)
- Length of External Male Thread = 0.08" (2.1mm)
- Thread Specification (External Thread) = M28.5x0.6 Male
- Length of Internal Female Thread = Greater than 0.39" (10mm)
- Thread Specification (Internal Thread) = M28.5x0.6 Female
- Maximum Outer Diameter = 1.25" (31.7mm)
- Weight = 0.3oz (9g)
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
Description/Uses:
- 1.25" extension ring/barrel spacer
- Provides 0.75" (19.1mm) of spacing
- Allows you to securely set or vary the spacing between 1.25" components
- Useful for making eyepieces parfocal or to change the reduction factor of focal reducers
- Has standard 1.25" filter threads (male on one side and female on the other)
Features:
- Precision machined from aluminum and black anodized
- Threaded to accept standard 1.25" astronomy filters
Specifications:
- Total Length = 0.89" (22.05mm)
- Extension Provided = 0.75" (19.05mm)
- Length of External Male Thread = 0.08" (2.1mm)
- Thread Specification (External Thread) = M28.5x0.6 Male
- Length of Internal Female Thread = Greater than 0.39" (10mm)
- Thread Specification (Internal Thread) = M28.5x0.6 Female
- Maximum Outer Diameter = 1.25" (31.7mm)
- Weight = 0.3oz (9g)
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
Blue Fireball 1.25" Spacer Ring with 0.75" Extension # S-1C