User manual ORION TELESCOPES & BINOCULARS 09030

[. . . ] INSTRUCTION MANUAL Orion Observer 60mm EQ ® TM #9030 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 107 0998 Objective lens Optical tube Tube cradle Finder scope 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 Finder scope alignment screws Finder scope bracket 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. [. . . ] 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. ­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. Retighten the lock knob. 6 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. 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?If you wear eyeglasses, you may be able to keep them on while you observe, if your eyepieces have enough "eye relief" to allow you to see the whole field of view. You can try this by looking through the eyepiece first with your glasses on and then with them off, and see if the glasses restrict the view to only a portion of the full field. If they do, you can easily observe with your glasses off by just refocusing the telescope the needed amount. Calculating the Magnification It is desirable to have a range of eyepieces of different focal lengths, to allow viewing over a range of magnifications. [. . . ] If dust builds up, however, simply blow it off with a blower bulb, or lightly brush it off with a soft camel-hair brush. Avoid touching optical surfaces with your fingers, as skin oil may etch optical coatings. To remove fingerprints or smudges from a lens, use photographic-type lens cleaning fluid and lint-free optical lens cleaning tissue. Don't use household cleaners or eyeglasstype cleaning cloth or wipes, as they often contain undesirable additives like silicone, which don't work well on precision optics. [. . . ]