OpenScope MK II F5 Newtonian Telescope

prusaprinters

A 3D printable F5 Newtonian telescope with an open or closed frame design and support for autofocusing designed for astrophotography or visual observing. Designed to support A6 inch primary mirror and can be customized to support multiple focal lengths.Utilizes a remix of a 3D printed 2-inch Crayford focuser to allow for a belt-driven auto focuser system driven by a NEMA 17 stepper.supports a standard dovetail mounting rail for compatibility with most computerized goto tracking mounts. Bill of materials:~1kg PLA3 1515 makerbeams length depends on the focal length of the primary mirror.18 M3x818 M3 square nuts (these need to be compatible with the 1515 extrusions)9 8mm OD 20mm length springs (six can be substituted for 3D printed 20mm long spacers)6 M4x353 M4x40 hex bolt3 M4 wingnut4 M3x1212 M3 threaded insert11 M4 threaded insert3 M3x301 M3x454 M6x304 M6 locking nut1 GT2 40T pully1 GT2 16/20T pully1 GT2 200mm beltAll parts listed in the focuser BOM1 6-inch primary telescope mirror (highly recommend a parabolic mirror see link)1 2-inch angled secondary mirror (well usually comes with the primary)Optional items8-inch concrete sonotube2-inch coma corrector (especially if using the scope for astrophotography)Dovetail mounting bracket.I have included the files for the focuser that I've modified the rest should be found on his website that I've linked below.I've also included the CAD files for the entire project. An assembly guide will come shortly. Edit 09OCT22added more photos Linkshttps://marcosatm.com/2020/06/04/2in-crayford-focuser/https://agenaastro.com/gso-parabolic-primary-telescope-mirror-6-f-5-ad046.html