User manual ORION TELESCOPES & BINOCULARS 09073
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Manual abstract: user guide ORION TELESCOPES & BINOCULARS 09073
Detailed instructions for use are in the User's Guide.
[. . . ] Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Suggested Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
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P. O. Description 1 1 1 Optical tube assembly (including 7x35 finder scope and bracket, and carrying handle) Dust cover Padded case
Cooling the Telescope All optical instruments need time to reach "thermal equilibrium" to achieve maximum stability of the lenses and mirrors, which is essential for peak imaging performance. When moved from a warm indoor location to cooler outdoor air, a telescope needs time to equilibrate to the outdoor temperature. [. . . ] Required Accessories The Argonaut 150 does not come with a star diagonal or eyepiece, since many purchasers of this caliber of telescope already have these accessories. The Argonaut 150 requires either a 1. 25" or 2" star diagonal. If you are planning on using 1. 25" eyepieces, you must use a 1. 25" diagonal (Orion #8778). This will first require placing a 2"-to-1. 25" adapter (Orion #8768) directly into the Crayford focuser. The 1. 25"
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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. Camera tripods work fine for daytime usage, but do not work well for pointing the telescope upward for astronomical viewing. 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. 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. 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. Aligning the Finder Scope The finder scope and the telescope should be aligned to point to exactly the same spot in the sky. [. . . ] 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. [. . . ]
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