Blue Fireball 1.25" Eyepiece Extension Tube with 1" 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:
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Description/Uses:
- Adds 25.4mm (1") of back-focus travel to your telescope focuser *
- Fits standard 1.25" eyepiece tubes in telescopes and accessories like diagonals
- With this, eyepieces and accessories that you may not have been able to use because your telescope tube was too short are usable again
Features:
- Precision machined from aluminum and black anodized
- Threaded to accept standard 1.25" astronomy filters
- Features a brass compression ring so the inserted accessory will not be scratched or dented by the locking thumbscrew
Specifications:
- Total Length = 1.98" (50.4mm)
- Outside Length of Upper 1.25" Barrel = 1" (25.4mm)
- Inside Length of Upper 1.25" Barrel = 0.92" (23.4mm) *
- Length of Lower 1.25" Barrel = 0.91" (23mm)
- Maximum Outer Diameter (Excluding Thumbscrew) = 1.5" (38mm)
- Thread Specification (Telescope End) = M28.5x0.6 Female
- Thread Specification (Thumbscrew) = M4x0.7 Male
- Weight = 1.2oz (34g)
Additional Information:
* If the inserted eyepiece does not fully slide into the upper 1.25" barrel, additional in-focus travel will be required by the amount the eyepiece extends out
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
Description/Uses:
- Adds 25.4mm (1") of back-focus travel to your telescope focuser *
- Fits standard 1.25" eyepiece tubes in telescopes and accessories like diagonals
- With this, eyepieces and accessories that you may not have been able to use because your telescope tube was too short are usable again
Features:
- Precision machined from aluminum and black anodized
- Threaded to accept standard 1.25" astronomy filters
- Features a brass compression ring so the inserted accessory will not be scratched or dented by the locking thumbscrew
Specifications:
- Total Length = 1.98" (50.4mm)
- Outside Length of Upper 1.25" Barrel = 1" (25.4mm)
- Inside Length of Upper 1.25" Barrel = 0.92" (23.4mm) *
- Length of Lower 1.25" Barrel = 0.91" (23mm)
- Maximum Outer Diameter (Excluding Thumbscrew) = 1.5" (38mm)
- Thread Specification (Telescope End) = M28.5x0.6 Female
- Thread Specification (Thumbscrew) = M4x0.7 Male
- Weight = 1.2oz (34g)
Additional Information:
* If the inserted eyepiece does not fully slide into the upper 1.25" barrel, additional in-focus travel will be required by the amount the eyepiece extends out
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
Blue Fireball 1.25" Eyepiece Extension Tube with 1" Extension # X-01