Meade LX200-ACF 8 inch User Manual - Page 39
Two-Star Alt/Az Alignment, One-Star Alt/Az Alignment
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Note: AutoStar II locates alignment stars based on the date, time, and location entered. The alignment stars may change from night to night. All that is required is for the observer to center the selected stars in the eyepiece when prompted. Tip: Try a Spiral Search The GO TO key also allows you to perform a "spiral search". A spiral search is useful when the telescope slews to an object, but that object is not visible in the eyepiece after the telescope finishes its search. (This sometimes occurs during an alignment procedure.) Press GO TO when the slew is finished and the telescope starts slewing in a spiral pattern at a very slow speed around the search area. Look through the eyepiece and when the object does become visible, press MODE to stop the spiral search. Then use the Arrow keys to center the object. Two-Star Alt/Az Alignment Two-Star Alignment requires some knowledge of the night sky. AutoStar II provides a library of bright stars and two stars from this library are chosen by the observer for alignment. In this procedure, AutoStar II does not automatically find home, level, or North. 1. Select Alignment. Select "Align: Two Star" from the Setup menu. Press ENTER. 2. Set Home Position. Place the telescope in the home position. 3. To Set the Home Position Manually: a. See Figs. 19 and 20. Loosen the telescope's Dec. lock (Pg. 7, Fig. 1, 17). Set the optical tube to 0° on the Dec. setting circle (Fig. 1, 20). b. Tighten the Dec. lock (Fig. 1, 17) to a firm feel only. c. Level the tripod base. d. Move the base of the telescope so that the computer control panel (Fig. 1, 13) approximately faces South. e. Unlock the R.A. lock (Fig. 1, 12) and turn the telescope's optical tube horizontally until it points North. f. Re-lock the R.A. lock (Fig. 1, 12). Press ENTER. g. Press ENTER. 4 . Star Alignment. "Select Star" displays. AutoStar II then displays a library of stars for the observer to choose from. Use the Scroll keys to scroll to a star on the list that you wish to align upon-select a star that you can easily locate in the night sky. Press ENTER. 5. Center Star. The telescope slews to the star. Use the Arrow keys to move the telescope until the star is centered in the eyepiece. Press ENTER. 6. Center Star. Repeat procedure for a second alignment star. Once ENTER is pressed, the telescope is aligned and you are now ready to use AutoStar's II GO TO capabilities for a night of observing. One-Star Alt/Az Alignment One-Star Alignment requires some knowledge of the night sky. AutoStar II provides a library of bright stars. One-Star Alignment is identical to Two-Star Alt/Az: Alignment (ABOVE), except only one star from the database is chosen by the observer for alignment. - 39 -