Meade Polaris 90mm User Manual - Page 8
Insert The Eyepiece, Balancing The Telescope, Sun Warning, Never Use Your Telescope, To Look At
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locking screw (16, Fig 5). 6 Fig. 4 Fig. 5 SUN WARNING! NEVER USE YOUR TELESCOPE TO LOOK AT THE SUN! LOOKING AT OR NEAR THE SUN WILL CAUSE INSTANT AND IRREVERSIBLE DAMAGE TO YOUR EYE. EYE DAMAGE IS OFTEN PAINLESS, SO THERE IS NO WARNING TO THE OBSERVER THAT DAMAGE HAS OCCURRED UNTIL IT IS TOO LATE. DO NOT POINT THE TELESCOPE OR ITS VIEWFINDER AT OR NEAR THE SUN. DO NOT LOOK THROUGH THE TELESCOPE OR ITS VIEWFINDER AS IT IS MOVING. CHILDREN SHOULD ALWAYS HAVE ADULT SUPERVISION WHILE OB- SERVING. to hold the eyepiece securely. INSERT THE EYEPIECE (REFLECTOR MODELS ONLY) 1. Slide the MA25mm eyepiece (19) directly into eyepiece holder on the focuser (17). 2. Tighten the focuser thumbscrew(s) (18) (REFRACTOR MODELS ONLY) 1. First, slide the 90 degree erect image prism (14, Fig 1B) directly into the focuser draw tube (17). 2. Tighten the focuser thumbscrew(s) (18) to hold the 90 degree prism securely. Looking at or near the Sun will cause irreversable damage to your eye. Do not point this telescope at or near the Sun. Do not look through the telescope as it is moving. 3. Then, slide the MA25mm eyepiece (19) directly into 90 degree erect image prism (14, Fig 1B). 4. Tighten the 90 degree erect image prism thumbscrew (15, Fig 1B) to hold the eyepiece securely. BALANCING THE TELESCOPE In order for the telescope to move smoothly on its mechanical axes, it must first be balanced as follows: Note: If the counterweight is positioned as recommended previously then the telescope is already approximately balanced. 1. Loosen the right ascension lock (22). The telescope mount will turn freely about the polar axis. Rotate the telescope about the polar axis so that the counterweight shaft (6) is parallel to the ground (horizontal). 2. Loosen the counterweight locking knob (7) and slide the counterweight (5) along the shaft (6) until the telescope remains in any given position without tending to drift up or down around the polar axis (10). NOTE: Always re-tighten the counterweight