Minimum focuser height (without 1.25" adapter) = 2.05" (52mm) Maximum focuser height (with 1.25" adapter) = 3.98" (101mm) Minimum focuser height (with 1.25" adapter) = 2.44" (62mm) GSO's rated load capacity for their Crayford focusers is a little less than 6 lbs (2.7 kgs).įocuser Specifications (With 8"/10" Base Plate): At tighter settings, you can still use heavier accessories without sacrificing much of the smooth focuser action. At the easiest (lightest) setting, the focuser moves extremely smoothly. The other thumbscrew on the eyepiece end can be used to adjust the tension of the focuser to achieve a focusing "feel" that you like. The thumbscrew on the telescope side can be used to lock the focuser, allowing the use of heavy accessories or cameras without fear or slippage or losing focus. The focuser also has two large thumbscrews. For help in deciding which base plate to choose (including specifications and hole spacing), please click here. Flat bases are also available at an additional charge. Please make your size selection while ordering this item. The focuser comes with a curved base plate (available in 8"/10" and 12" models) for mounting on many telescopes. Also included is a 1.25"-2" adapter with brass compression rings that is threaded to accept standard 2" filters. The 2" focuser barrel features a brass compression ring so your eyepieces and other accessories will not be marred by the set-screw. The inner barrel is baffled and painted a flat black to minimize reflections for maximum contrast. The inner drawtube glides on 4 precision bearings and a roller shaft.
This is ideal for telescopes requiring more in-focus travel for visual/imaging applications as compared to the regular model.ĬNC machined from aluminum and anodized black with a chrome-plated inner barrel, this focuser comes with a base plate to attach to your reflector telescope. This is a "Low Profile" model that is shorter than the regular model, yet it provides 39mm of focus travel.
Agena astro gso focuser install#
You will wonder how you ever lived without it once you install it! It will make achieving precise focus for visual observations and astrophotography a breeze and you will experience very smooth and precisely controlled focuser motion with zero backlash and zero image shift. This very high quality, dual-speed Crayford focuser for reflector telescopes from Guan Sheng Optical (GSO) is a joy to use.
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