Optiques Fullum Folded Newtonian 65" f/3.5

As these are custom-made systems, please contact us to discuss your requirements. Final price can vary depending on your custom requirements.The price does not include crating and shipping. Description Explore Scientific is proud to partner with Optiques Fullum to offer the full range of large Fullum-folded Newtonians for the discerning astronomer who demands exceptional quality, ease of use and extreme apertures. Fullum-folded Newtonian telescope systems are designed, engineered and manufactured in-house by Optiques Fullum and are available with mirrors up to 65" (165 cm) in diameter. This configuration features a parabolic primary mirror with a very short focal ratio (between f/3.5 and f/4), coupled to a secondary mirror placed much lower than normal, which will redirect the optical axis at a 17.5-degree angle instead of 45 degrees. This results in a more secure focal position for the observer. For these telescopes, Optiques Fullum fabricates very light custom-designed aluminum and