User manual ORION TELESCOPES & BINOCULARS 09073

[. . . ] Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Suggested Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Customer Support (800) 676-1343 E-mail: support@telescope. com Corporate Offices (831) 763-7000 Providing Exceptional Consumer Optical Products Since 1975 P. O. Box 1815, Santa Cruz, CA 95061 IN 098 Rev. [. . . ] This will first require placing a 2"-to-1. 25" adapter (Orion #8768) directly into the Crayford focuser. The 1. 25" 2 eyepieces will not reach focus if used in the 2" diagonal. If you wish to use 2" eyepieces, you must additionally purchase a 2" star diagonal (Orion #8773). For terrestrial (daytime) use, we recommend the 1. 25" 45° correct image diagonal (Orion #8790). Mounting Options If you have purchased the #21480 package, then you already have an equatorial mount to use with your Argonaut 150. Refer to the instructions that come with the SkyView Deluxe Equatorial Mount and the 1/4"-20 Adapter to assemble the mount and connect the telescope. Another excellent mount for the Argonaut 150 tube assembly is the Vixen Great Polaris (GP) Equatorial Mount (Orion item #9245). The Argonaut 150 has a mounting plate on the underside of its optical tube that accepts both 1/4"-20 and 3/8"-16 threaded mounting bolts. These are the mounting bolts found on standard camera tripods. Camera tripods work fine for daytime usage, but do not work well for pointing the telescope upward for astronomical viewing. For astronomy we highly recommend a sturdy equatorial mount. The telescope can be attached to an equatorial mount by either the mounting plate on the optical tube, or by tube rings (purchased separately). Focusing the Telescope The Argonaut 150 is equipped with a Crayford-type focuser that smoothly moves the focuser drawtube in and out. Insert either a 1. 25" diagonal with a 2"-to-1. 25" adapter or a 2" diagonal into the focuser drawtube. Secure the diagonal with the setscrew on the drawtube. Insert an eyepiece into the diagonal and secure it with the thumbscrew. To test the focusing procedure, look through the eyepiece and find a bright star or a land object over a quarter-mile away. Now, using your fingers, slowly rotate one of the focusing knobs until the object comes into sharp focus. There are two setscrews on the underside of the focuser. The one that is nearest to the drawtube (farthest back) adjusts the tension of the focus knob against the focuser drawtube. Tighten this setscrew finger-tight so the drawtube moves in and out smoothly when the focus knob is rotated. This setscrew may need to be readjusted when changing to a heavier or lighter eyepiece. [. . . ] If the product is not registered, proof of purchase (such as a copy of the original invoice) is required. This warranty does not apply if, in Orion's judgment, the instrument has been abused, mishandled, or modified, nor does it apply to normal wear and tear. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. For further warranty service information, contact: Customer Service Department, Orion Telescopes & Binoculars, P. [. . . ]