Description: This used focuser has been tested and is in good working conditions.It shows some marks of wear on the flange on the adapter part that goes inside the telescope; once installed that part is not visible and the focuser assembly looks quite fine and it operates just fine.That flange adapter is removable and has 3 holes to mount into your telescope using screws, this one has the top hole blocked by a broken screw. You can still mount the focuser using the other 2 holes, you can try to remove the broken screw or you can buy a new flange adapter for $30 online.This GSO focuser retails new online for $220. From the manufacturer: This very high quality, dual-speed Crayford focuser for refractor telescopes from GSO is beautifully machined and a joy to use. You will wonder how you ever lived without it once you install it! A. Smooth Focusing Action The Crayford style focusing control makes 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. B. High-Quality Construction and Features CNC machined from aluminum and anodized black, this focuser comes with a base plate adapter to attach to refractor telescopes. The inner drawtube glides on 4 precision bearings and a roller shaft and provides 79mm (3.11") of focus travel. The inner barrel is baffled and painted a flat black to minimize reflections for maximum contrast. The 2" focuser barrel features a brass compression ring so your eyepieces and other accessories will not be marred by the set-screw. Also included is a 1.25"-2" adapter with brass compression rings that is threaded to accept standard 2" filters. The inner draw-tube barrel is anodized black and features a laser-etched scale. C. Tension Adjustment and Focus-Lock The focuser has two large thumbscrews on the underside. 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 other thumbscrew on the eyepiece end can be used to adjust the tension of the focuser to achieve a focusing "feel" that you like. At the easiest (lightest) setting, the focuser moves extremely smoothly. At tighter settings, you can still use heavier accessories without sacrificing much of the smooth focuser action. GSO's rated load capacity for their Crayford focusers is about 6 lbs (2.7 kgs). D. 360-degree Rotation These focusers are rotatable, i.e., you can turn the entire focuser body/diagonal/eyepiece combination into a better observing position by loosening or tightening a large silver thumbscrew on the top of the focuser. However, please note that this is a relatively weak feature of this otherwise excellent product. We inspect every single focuser and tweak/lube it as much as we can, but the rotation is often not smooth over the entire 360-degrees and may bind in a few spots, requiring additional effort to rotate it. This is probably a minor annoyance since most people will not use this feature very often.
Price: 89 USD
Location: Irving, Texas
End Time: 2024-11-15T20:22:34.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
Brand: GSO
Type: Accessory
Item Diameter: 2 in
Manufacturer: GSO
Compatible Model: GSO Speed-86
Telescope Type: Refractor
MPN: M-LRA-86
