User manual BUSHNELL DEEP SPACE 78-9518

[. . . ] Remove the two nuts located near the front of the telescope (closet to the eyepiece) and place the Finderscope and Finderscope Mount over the exposed screws. The Finderscope Focus Adjustment (16) should point towards the Primary Mirror (14). Replace the nuts, and securely tighten the Finderscope and Finderscope Mount in place. Using the accessory tray bolts, wingnuts and washers connect the Accessory Tray to the Accessory Tray Braces (9). [. . . ] After selecting the desired eyepiece, aim main telescope tube at a land-based target at least 200 yards away (e. g. Fully extend focusing tube by turning Rack and Pinion Focusing Mechanism (3). 2. While looking through selected eyepiece (in this case the 20 mm), slowly retract focusing tube by turning Rack and Pinion Focusing Mechanism until object comes into focus. Aligning Finderscope: 1. Look through Main Telescope Tube (15) and establish a well-defined target. (see focusing telescope section) Tighten all lock knobs (Declination, Latitude, Right Ascension, Horizontal Axis and Cradle) so that telescope's aim is not disturbed. Looking through Finderscope (1), alternate tightening each Finderscope Adjustment Screw (17) until crosshairs of Finderscope are precisely centered on the same object already centered in Main Telescope Tube's(15) field of view. Now, objects located first with the Finderscope (20) will be centered in the field of view of the main telescope. 3. Balancing the Telescope 1. Arrange the telescope so that the telescope body is horizontal to the floor (latitude of 0°). Rotate the telescope about the polar axis so that the Counterweight Shaft (7) is parallel to the ground (horizontal). Loosen the Counterweight Lock Screw (located on the counterweight), and slide the Counterweight (6) along the shaft until the telescope remains stationary without drifting rotationally about the polar axis. Tighten the Counterweight Lock Screw, locking the Counterweight into position. Loosen the Declination Lock Screw (18) and the Cradle Lock Knobs (fig. Slide the telescope up or down inside the rings until the telescope remains stationary without drifting rotationally about the Declination Axis. The telescope is now balanced. Cradle (25) 2. 3. Cradle Lock Knob Fig. 3 UNDERSTANDING THE EQUATORIAL MOUNT The Equatorial Mount (20) is designed to move in any direction. It can be set to allow manual controls to track the movements of celestial bodies across the sky. This is referred to as diurnal movement; movement of celestial bodies in the direction opposite to that of the earth's rotation and is around the earth's axis. By aligning the telescope's polar axis at celestial North, you will place the telescope in parallel with the earth's axis and thus be able to locate stars in the sky based on star atlas information. To compensate for your position on earth, the polar axis is set in one of three ways: · Set up the telescope at night. Loosen the Declination Lock Knob (18) and rotate the telescope around the declination axis until the arrow on the declination scale points to 90 degrees. Loosen the Horizontal Axis Lock Knob (13) and turn the telescope until the objective end faces due north. This can be done by approximating the location of the pole star (Polaris or North Star) or by the use of a compass. True North is then found by directing the telescope at Polaris, as magnetic North is slightly away from true North. Loosen the Latitude Lock Knob (22) and set the latitude scale to the correct latitude for your area. [. . . ] The numbers on the eyepiece represents the "focal Length" of the eyepiece. 2. How do I determine the power my telescope ? · 3. Where do I find the Telescope Focal Length · 4. What can I see with my telescope ? · 5. What do the numbers on the eyepiece mean ? · TROUBLESHOOTING GUIDE If after you have set-up your new telescope you are unable to see any objects, use this Quick Reference guide to help you to understand the cause of the problem and quickly determine a remedy 1. I've completed the set-up yet I cannot see anything · · · Check to see if objective lens cover has been removed. If there is more than one eyepiece included with the telescope, use the lowest power (highest number) eyepiece to begin viewing. Use the Rack & Pinion Focusing Mechanism (3) to bring the object you are trying to view into focus · Telescope LIFETIME LIMITED WARRANTY Your telescope is warranted to be free of defects in materials and workmanship for the lifetime of the original owner. The Lifetime Limited Warranty is an expression of our confidence in the materials and mechanical workmanship of our products and is your assurance of a lifetime of dependable service. [. . . ]