User manual ORION TELESCOPES & BINOCULARS TELE EXTENDER

[. . . ] Tele-Extender #5125 Standard Tele-Extender #5127 Variable Tele-Extender Your Orion Tele-Extender will allow you to take highmagnification photographs of celestial objects with a Schmidt-Cassegrain telescope. It is particularly useful for planetary astrophotography, close-ups of lunar craters, and extremely long distance terrestrial photography. when using a tele-extender. The eyepiece enlarges the image and therefore reduces the amount of light. [. . . ] Instead of inserting the star diagonal into the visual back, insert an eyepiece and hand tighten the set screw. Thread the tele-extender onto the visual back, over the eyepiece. Thread your T-ring onto the end of the tele-extender and attach your camera. Some telescopes do not have a separate visual back, such as the Meade LX5 series, LX6, and the Meade 2045. You may have to purchase a visual back to use a tele-extender. A 1. 25" visual back which fits Meade and Celestron Schmidt-Cassegrain 4", 8", 10", 11", and 14" scopes is available from Orion (#15048). (Celestron C-90s and some other small spotting scopes have threads that will fit a tele-extender directly but require the use of . 965" eyepieces to create the higher magnifications. ) Most standard eyepieces are useable with a tele-extender. Some eyepieces have barrel assemblies that are too large to fit inside a tele-extender. See the diagram below for reference on how to attach a tele-extender to your telescope. When you look through your camera and focus the telescope, you will notice a dim, highly magnified image. This is normal *Beyond useful magnification--not recommended Focusing It can be quite difficult to focus the telescope, especially when using eyepiece projection!In fact, with most cameras the image in the viewfinder can be so dim that it may be difficult to find the focal point at all. Use a bright object such as the Moon or a bright star for focusing. Find and center this object in the telescope's field before installing the camera adapter. If your camera has interchangeable focusing screens, use a fine-ground glass screen. It will be much brighter and will make focusing easier. [. . . ] Box 1815, Santa Cruz, CA 95061 IN 011 Rev. B Precautions Be very careful not to release the set screw holding the eyepiece before removing your camera and tele-extender. If the screw is released and the eyepiece falls through the extender tube, it can damage your camera. Customer Support (800) 676-1343 E-mail: support@telescope. com Corporate Offices (831) 763-7000 Providing Exceptional Consumer Optical Products Since 1975 P. O. [. . . ]