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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
ERFs are custom machined on a one-off basis and so the accuracy of this measurement is very important
Incredibly low-priced H-alpha dedicated telescope
'Solar Bullet' finder
This Finder Scope Base is specifically designed to allow you to secure one of Explore Scientific’s finder scopes to the telescope of your choice
Astrozap Off-Axis Glass Solar Filter 257mm-264mm Accessories_Diagonals ERFs are custom machined onAstrozap 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
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