Astromania Upgrated Guide Scope 70mm FMC with Double Helical Focuser, Deluxe Finder Guidescope Kit Compatible with 1.25 inch Eyepiece for Astronomy Telescope & Auto Guiding Camera for Astrophotography

400mm focal length: with bright; wide-field optics puts numerous potential guide stars in view so you'll never have to search for one; mini-guide tube to quickly find objects and guiding stars, designed both for visual; as well as for photographic use. Have a built-in worm-focuser with brass compression ring and 2 thumbscrews; 90mm focusing range ""10mm focusing range with micro-focusing helical focuser; the rest is by a fixable; scaled drawtube"" is made possible by an extremely precise focus adjustment. Take 1.25 inch eyepiece; worm focuser for fast focusing prevent rotation of camera or eyepiece; use as viewfinder to waste less time finding objects in visual observation; come with matching pipe clamps and synta style mounting plate to install easily. Sturdy black anodized aluminum housing; milled and knurled ring allow precise focus adjustments; lock thumbscrew to hold extension tube in place; other two holes are equipped with built in hex screws which tighten two hex screws with hex wrench to lock. Adjustable-aim dovany weight to an astrophotography setup and can conveniently be stashed in an accessory case between uses; dovetail guide scope bracket installs on virtually any astrophotography telescope quickly and easily