User manual ORION TELESCOPES & BINOCULARS FOCUSINGADAPTER
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Manual abstract: user guide ORION TELESCOPES & BINOCULARS FOCUSINGADAPTER
Detailed instructions for use are in the User's Guide.
[. . . ] Orion Helical Fine-Focusing Adapter
#13025 Introduction Most modern telescopes come equipped with rack-and-pinion focusers. These are adequate for focusing at low powers. [. . . ] The gentle twisting action of the adapter means no extra force is applied to the tube during focusing, so images remain steadier.
Installation The helical adapter will fit into any 2" focuser and accepts eyepieces with a barrel diameter of 1. 25" (only). To install the helical adapter, first remove any existing 1. 25" adapter from the focuser if you have not already done so. Then insert the adapter into the focuser and secure it with the thumbscrew(s), just like you would a 2" eyepiece. Then insert the 1. 25" eyepiece you wish to use into the adapter and secure it with the thumbscrew. The helical adapter requires that the telescope have at least 9mm of inward focus travel to focus. It requires 17mm of inward focus to utilize the full focus range of the helical adapter. Most telescopes will have this amount of inward focus travel. Operation Initial coarse focusing should be done by adjusting the telescopes's main focuser. Once you are close to being in focus, rotate the helical adapter with your fingers until the object comes into focus. Go a little bit beyond sharp focus until the image just starts to blur again. Then reverse the rotation of the adapter, just to make sure you've hit the exact focus point. You will find the helical adapter easy to use when making small focusing adjustments. [. . . ] Over time, you may wish to add a small amount of light oil to the adapter's threads to aid in reducing friction.
Specifications
Size: Fits 2" focusers Eyepieces: Holds 1. 25" eyepieces Focusing design: Helical Material: Machined aluminum Grips: Rubber Extension rate: . 16" per revolution
Customer Support (800) 676-1343 Email: support@telescope. com
Providing Exceptional Consumer Optical Products Since 1975
Corporate Offices (831) 763-7000 P. O. Box 1815, Santa Cruz, CA 95061
IN 228 Rev A 09/03 [. . . ]
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