Extension Tubes

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Arcturus 1.25 Screw in Extension

1.25 thread spacer/extension tube. Has standard male 1.25 thread on one side and female thread on the other, allowing you to extend the barrel of your 1.25 eyepiece or CCD imager tube by 30mm. Precision machined from aluminum and anodized black. Multiple extenders may be attached to each other inline.


Our price: $25.00 (€21.75)
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Arcturus Slip-In Extension Tube 1.25 inch
Arcturus Slip-In Extension Tube 1.25 inch with brass compression fitting
Adapter is fully blackened and threaded to accept 1.25 inch filters
Extends backfocus of drawtube by 25mm. (1 inch)

Our price: $25.00 (€21.75)
Market price: $30.00 , save 17%
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Arcturus Slip-In Extension Tube 2 inch
Arcturus Slip-In Extension Tube 2 inch with brass compression fitting
Adapter is fully blackened and threaded to accept 2 inch filters
Extends backfocus of drawtube by 50mm (2 inches)

Our price: $30.00 (€26.10)
Market price: $45.00 , save 33%
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Televue 2" Extension Tube - 2" Long

* The TeleVue Extension Tube - X2C-0008 measures 2" long and is 2" in diameter. * Used for photographic purposes with many Televue refractors. * The TeleVue Extension Tube - X2C-0008 provides the necessary focus distance when the 2" diagonal is removed. * Includes non-marring brass clamp rings.


Our price: $65.00 (€56.55)
Market price: $75.00 , save 13%
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Televue 2" Extension Tube - 3.5" Long

* This TeleVue Extension Tube adds an additional 3.5" of outward travel. * Measures 2" in diameter and designed for 2" focusers. * The This TeleVue Extension Tube is used for photographic purposes with many Televue refractors. * Includes non-marring brass clamp ring.


Our price: $65.00 (€56.55)
Market price: $75.00 , save 13%
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