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Extension Tubes and Spacer Rings


Extension Tubes and Spacer Rings
Extension tubes and spacer rings are often required to reach focus or to achieve the proper spacing between a focal reducer and the image plane. When attaching a camera to a refractor it is often necessary to replace the optical path length of the star diagonal with an extension tube. Focal reducers and field flatteners all have an optimal spacing to the image plane, and spacer rings as thin as 1 mm are commonly available for this purpose.

Extension Tubes and Spacer Rings

Orion Telescope Eyepiece Extension Tube 1.25-inch
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$19.00
Orion Telescope Eyepiece Extension Tube 2-inch
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$22.00
TeleVue Accessory Tube Set
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$119.00
TeleVue Extension Tube 2"
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$65.00
TeleVue Extension Tube 3.5"
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$65.00