User manual ORION TELESCOPES & BINOCULARS TERRA SPOTTER
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Manual abstract: user guide ORION TELESCOPES & BINOCULARS TERRA SPOTTER
Detailed instructions for use are in the User's Guide.
[. . . ] Before using your Terra spotting scope, we recommend that you read through the following instructions.
large movements in altitude, loosen the altitude lock knob and raise or lower the spotting scope to the desired level. For large movements in azimuth, loosen the knurled azimuth lock ring and move the spotting scope left or right to the desired position. Mounting the Terra Spotting Scope to an Optional Tripod The Terra spotting scope can also be attached to an optional camera tripod by use of the 1/4"-20 threaded hole located on the spotting scope's body. [. . . ] Changing the magnification may also require a slight refocusing of the spotting scope to achieve the sharpest image. For general use, it's a good idea to start viewing at the lowest magnification (18x) until you've acquired your viewing target. Note that as magnification increases, the images will not be as bright as they are at lower powers. Photography The Terra spotting scope comes with a 35mm camera adapter. This adapter, along with an optional, brand-specific Tring and 35mm SLR camera, can be used to take pictures through your spotting scope. To properly use the spotting scope and camera adapter, you must remove the lens from the camera and thread the T-ring in place of the lens. Thread the camera adapter onto the body of the spotting scope straight over the zoom eyepiece. When finished, the camera/spotting scope assembly should resemble Figure 2.
Cleaning the Lenses The lens surfaces of the Terra are coated with anti-reflection coatings, which can be damaged with careless handling. Avoid touching lens surfaces with your fingers or any coarse material. Clean the lenses a few times a year, or more frequently if they get noticeably dirty. The dust that builds up on them promotes mold growth, which etches the glass and destroys the coatings. Always use lens cleaning tissue and fluid designed specifically for telescope optical coatings. Do not use regular tissue or fluids made for eyeglasses or household use. To clean the lenses, first blow air on the lens with a blower bulb or compressed air to remove any large particles. Then brush the lens with a soft lens brush and blow air again to remove any dislodged particles. Put two drops of lens cleaning fluid on a sheet of lens tissue (never directly on the lens). Wipe the lens gently in a circular motion, taking care to avoid undue pressure or rubbing. Quickly remove the excess fluid by wiping with a clean, dry lens tissue. [. . . ] Normally the lens shade is kept retracted, but in circumstances where glare is a problem the lens shade can be extended. This is useful for keeping unwanted light from reaching the objective lens and washing out the image. Care and Maintenance Although the Terra spotting scope is durable, it should not be exposed to the elements for extended periods. [. . . ]
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