User manual ORION TELESCOPES & BINOCULARS 09032

[. . . ] INSTRUCTION MANUAL Orion Observer 60mm EQ ® TM #9032 Equatorial Refracting Telescope 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 084 0998 Objective lens Optical tube Tube cradle Finder scope Finder scope alignment screws Finder scope bracket Dew cap Declination lock knob Right ascension slow-motion control Declination (Dec. ) setting circle Equatorial mount Right ascension lock knob (not shown) Counterweight Counterweight shaft Retaining washer and screw Counterweight lock knob Right ascension (R. A. ) setting circle Azimuth lock knob Eyepiece Star diagonal Focuser drawtube Focus knob Declination slow-motion control Latitude adjustment knob and scale (not shown) Tripod leg bolt Accessory tray bracket Accessory tray Tripod leg Leg lock knob Rubber foot Figure 1. Observer 60 EQ Parts Diagram 2 Congratulations on your purchase of a quality Orion telescope. Your new Observer 60 EQ Refractor is designed for high-resolution viewing of astronomical objects. [. . . ] Cooling the Telescope All optical instruments need time to reach "thermal equilibrium. " The bigger the instrument and the larger the temperature change, the more time is needed. Allow at least a half-hour for your telescope to cool to the temperature outdoors. In very cold climates (below freezing), it is essential to store the telescope as cold as possible. If it has to adjust to more than a 40° temperature change, allow at least one hour. Aiming the Telescope To view an object in the main telescope, first loosen both the R. A. Aim the telescope at the object you wish to observe by "eyeballing" along the length of the telescope tube (or use the setting circles to "dial in" the object's coordinates). Then look through the (aligned) finder scope and move the telescope tube until the object is centered on the crosshairs. The object should now be visible in the main telescope with a low-power (long focal length) eyepiece. Focusing the Telescope Practice focusing the telescope in the daytime before using it for the first time at night. Start by positioning the focuser near the center of its adjustment range. Point the telescope at a distant subject and get it in the field of view. Now, slowly rotate one of the focusing knobs until the object comes into sharp focus. Go a little bit beyond sharp focus until the image just starts to blur again, then reverse the rotation of the knob, just to make sure you hit the exact focus point. ­5° 27' That's 5 hours and 35. 4 minutes in right ascension, and ­5 degrees (5 degrees south of the celestial equator) and 27 minutes in declination. Before you can use the setting circles to locate objects, they must first be calibrated. The declination setting circle was calibrated at the factory, and should read 90° when the telescope optical tube is pointing exactly along the polar axis. Identify a bright star near the celestial equator and look up its coordinates in a star atlas. lock knobs on the equatorial mount (not the azimuth lock knob or latitude adjustment knob), so the telescope optical tube can move freely. Point the telescope at the bright star near the celestial equator whose coordinates you know. Finding Objects With the Setting Circles Now that both setting circles are calibrated, look up in a star atlas the coordinates of an object you wish to view. Most setting circles are not accurate enough to put an object dead-center in your finder scope's field of view, but they'll get you close, assuming the equatorial mount is accurately polar- 6 As with all refractor telescopes used with a standard 90° star diagonal, the image you see will be right-side up, but reversed left-to-right. (Correct-image diagonals are available, and may be purchased separately, though the image quality is slightly reduced. ) Do You Wear Eyeglasses? [. . . ] Store it in a clean, dry, dust-free place, safe from rapid changes in temperature and humidity. Do not store the telescope outdoors, although storage in a garage or shed is OK. Small components like eyepieces and other accessories should be kept in a protective box or storage case. Keep the objective lens cap on the front of the telescope when it is not in use. 8 Your Observer 60 EQ requires very little mechanical maintenance. [. . . ]