User manual ORION TELESCOPES & BINOCULARS 10400

[. . . ] EZ Balance TM Sliding Counterweight System for Dobsonian Telescopes #10400 EZ Balance, 1 lb. #10401 EZ Balance, 2. 5 lb. Congratulations on your purchase of a quality Orion telescope accessory. [. . . ] So make sure there is enough clearance between the rail (with the weight on it) and the cradle to avoid such contact. Remove the telescope tube from its cradle and lay it on a clean surface, so that the side of the tube opposite the focuser is accessible. Place the aluminum dovetail rail parallel to the length of the tube, so that the wide "base" of the rail is against the tube. The end of the rail that has the nonrecessed hole should butt up against the primary mirror cell trim (on an Orion Deep Space Explorer). Using a Phillips screwdriver, insert the three 1" screws through the holes in the rail, one at a time, and thread them into the telescope tube. Note that the round-head screw should go into the nonrecessed hole, nearest the bottom end of the telescope tube. It serves as a stop to keep the weight, if it is not tightened properly, from inadvertently sliding off the rail and falling onto an unsuspecting foot. If the tube of your Dobsonian is a Sonotube (bonded, spiralwrapped paper), you do not need to drill pilot holes before threading the screws in. If the tube material is something other than Sonotube, then pilot holes may be necessary to prevent the material from splitting. Thread the nylon-tipped lock bolt into the hole in the rectangular counterweight. [. . . ] If the tube drifts upward or downward noticeably when released, or when given a gentle nudge, it is not balanced, and the counterweight should be repositioned appropriately (farther back if the front of the tube drifts downward, farther forward if the front of the tube drifts upward). Focuser Altitude Bearing Round-Head Screw The telescope's balance may be affected when different eyepieces are used, or when other accessories are added to the front of the telescope, such as a finder scope or solar filter. In such cases, simply reposition the sliding weight along the dovetail rail to counterbalance the additional load, until balance is once again attained. Customer Support (800) 676-1343 E-mail: support@telescope. com Providing Exceptional Consumer Optical Products Since 1975 Corporate Offices (831) 763-7000 P. O. [. . . ]