Astromania 2-Inch Telescope Eyepiece Extension Tube Adapter provide extra focuser back travel sometimes needed to achieve focus with certain eyepiece or telescope combinations. More back travel is often needed for short-range terrestrial viewing or with use of a field flattener, coma corrector, or focal reducer lens. Extension tube provides extra focuser "back travel" often needed for short-range terrestrial viewing through a telescope, or for astrophotographic applications. Fits in 2" telescope focusers, and accepts 2" eyepieces or accessories. Features two locking thumbscrews to secure any inserted astronomy accessory, with a brass compression insh to prevent the marring of your telescope accessories. Machined of high quality aluminum and anodized black, durable for long time use.
- Fits in 2 inch telescope focusers and accepts 2 inch eyepieces or accessories; threaded for use with standand 2-Inch astrophotography filters
- Features two locking thumbscrews to secure any inserted astronomy accessory; with a brass compression insh to prevent the marring of your telescope accessories
- Extension tube provides extra focuser "back travel" often needed for short-range terrestrial viewing through a telescope; or for astrophotographic applications
- Extend focal length of telescope 50mm or a little more; various models have focal lengths of 35mm 50mm and 80mm in our store; required spacing can be achieved by combining several extenders of differing lengths; use 1 2 or 3 pieces as you like
- Machined of high quality aluminum and anodized black; durable for long time use
- Fits in 2 inch telescope focusers and accepts 2 inch eyepieces or accessories; threaded for use with standand 2-Inch astrophotography filters
- Features two locking thumbscrews to secure any inserted astronomy accessory; with a brass compression insh to prevent the marring of your telescope accessories
- Extension tube provides extra focuser "back travel" often needed for short-range terrestrial viewing through a telescope; or for astrophotographic applications
- Extend focal length of telescope 50mm or a little more; various models have focal lengths of 35mm 50mm and 80mm in our store; required spacing can be achieved by combining several extenders of differing lengths; use 1 2 or 3 pieces as you like
- Machined of high quality aluminum and anodized black; durable for long time use
