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in its simplest terms
Explore Scientific Rack and Pinion Focuser Extension Tube 1" Extension for our 2" Rack and Pinion focusers on our ED APO telescopes
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Smaller than your credit card
Astrozap Off-Axis Glass Solar Filter 238mm-244mm Focal Length_400 - 599mm in its simplest termsAstrozap Off Axis Glass Solar Filter These are safe off axis solar telescope filters. An off axis solar filter blocks light into the telescope by only allowing light through a small portion of glass that is off center. By reducing the aperture the image is not darker but the visibility of daytime atmospheric turbulence is reduced. This premium off axis solar filter has an aluminum cell that is secured and centered to the tube end of the telescope with