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3, and thread the three screws up through the bottom of the tripod head and into the bottom of the field tripod adapter. Firmly tighten the three screws, so that the tripod head and the field tripod adapter are rigidly connected. The field tripod adapter may be left permanently attached to the field tripod. 3. Place the equatorial head onto the top of the field tripod adapter. Be sure the two azimuth knobs are unthreaded far enough to allow the equatorial head to slide past the azimuth stud. 4. Thread the threaded rod (2, Fig. 1) up into the equatorial head using the tension knob (3, Fig. 1). Be sure to keep the spreader bar aligned with the tripod legs as the field tripod and equatorial head combination tightens up. Tighten the tension knob to a “firm feel,” over-tightening may deform the tripod legs and does not result in a more rigid system. (1) Azimuth Stud (4) Threaded Rod (2) Tripod Head (5) 1/4"-20 Attachment Screw (3) Field Tripod Adapter Fig. 3: Attaching the Field Tripod Adapter - 10- 4. Attaching the Counterweight(s) 1. The equatorial head has been shipped with the latitude angle roughly set to 0°. In this “shipping” position, the counterweight will not clear the tripod leg, therefore, the latitude angle should be set before the counterweight can be attached. Loosen the latitude lock lever (11, Fig. 4) and turn the latitude adjustment knob (5, Fig. 5) until the latitude scale indicates the correct latitude of your viewing location. (Determine the latitude of your viewing location by checking a road map or atlas.) Retighten the latitude locking lever. 2. Loosen the counterweight shaft locking lever (12, Fig. 5) and lower the counterweight shaft (9, Fig. 5). Lock into place by retightening the counterweight shaft locking lever. 3. Remove the counterweight safety stop (8, Fig. 5) from the end of the counterweight shaft. 4. Slide the one (or two) counterweights (10, Fig. 5) onto the counterweight shaft and lock into place by tightening the counterweight lock lever (7, Fig. 5). 5. Replace the counterweight safety stop onto the end of the counterweight shaft. CAUTION: Never operate the telescope without the counterweight safety stop in place. 5. The Dew Shield The 4", 5", and 6" APO telescopes have been shipped with the dew shields (1, Fig. 4) already installed onto the optical tube assembly and held in place with a safety screw (20, Fig. 4). The dew shield for the 7" APO telescope is shipped separately in carton #3. Use the following steps to attach the 7" dew shield: 1. Remove the dew shield safety screw from the bottom of the lens cell (2, Fig. 4). 2. Position the dew shield onto the end of the optical tube assembly, taking care to align the safety screw hole with the bottom of the lens cell. 3. Replace the dew shield safety screw. Be sure that the dew shield safety screw is always in place whenever using any Meade apochromatic telescope. 6. Mounting the Cradle Ring Assembly and OTA to the Equatorial Mount The cradle ring assembly (4, Fig. 4) has been shipped on the optical tube assembly (OTA) (3, Fig. 4). Use the following procedure to attach the cradle rings to the equatorial head. 1. Loosen the two cradle ring knobs (16, Fig. 5) and remove the cradle ring assembly from the OTA. 2. Remove the two 3/8"-16 bolts from the top of the Declination cover casting (15, Fig. 5) and attach the cradle ring assembly using these two bolts. Firmly tighten these two bolts. Once attached, the cradle ring assembly may be left permanently attached to the equatorial head. 3. Before placing the optical tube assembly into the cradle ring assembly (step 4, below), be certain that the R.A. lock lever (8, Fig. 4) and Dec. lock lever (5, Fig. 4) are firmly locked. 4. Place the optical tube assembly (3, Fig. 4) into the cradle ring assembly (16, Fig. 4) and secure by closing the cradle ring. Tighten the two cradle ring knobs. 5. Immediately perform the balancing procedure (“Balancing the Telescope”) described on page 14. -11 - 17! (13) ' * ■ ---/A’\, ....... (1) Dew Shield (12) Azimuth Knob (2) Lens Cell (13) Field Tripod Adapter (3) Optical Tube Assembly (OTA) (14) #814 Polar Alignment Viewfinder (4) Cradle Ring Assembly (Optional) R.A. Cover (5) Declination Lock Lever (15) Focuser Drawtube (6) Declination Setting Circle (16) Focuser Knob (7) Declination Slow-Motion Knob (17) #930 Diagonal Mirror (8) R.A. Lock Lever (18) Eyepiece (9) R.A. Slow-Motion Knob (19) Viewfinder (10) Latitude Scale (20) Dew Shield Safety Screw (11) Latitude Lock Lever Fig. 4: Apochromatic Refractor Equatorial Head - 12 - í 1 /....... 16' l. I 9 * f (1) Optical Tube Assembly (OTA) (2) Viewfinder (3) R.A. Motor Cord (Optional) (4) #814 Polar Alignment Viewfinder (Optional) R.A. Cover (5) Latitude Adjustment Knob (6) EDS Hand Controller (Optional) (7) Counterweight Lock Lever (8) Counterweight Safety Stop (9) Counterweight Shaft 6 Counterweight Azimuth Control Knob Counterweight Sha...

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