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tion manual for your mount.
2. At the Calibrate Menu, choose “2–Star Calibrate”. In the upper right of the
Choose Star screen, you will nd the zenith hour displayed (e.g. Z=15:43). This
allows you to open your star atlas to the page corresponding to the sky overhead.
You can also choose stars from the lists in Appendix I based on this “z” value.
3. Decide which star in the eastern sky to use as your 1st calibration star. There are 200 calibration stars and all
solar system objects from which to choose, e.g. Antares. Note: although the solar system objects display in the star
list, you cannot use them in these calibration routines. Since the R.A./Dec. positions of these objects change with time,
they are not suitable for slewing back and forth in multiple iterations. Do not use the solar system objects.
4. Move telescope manually (grasp the telescope by hand and move it) to the
star and center it in the eyepiece eld with the N-S-E-W directional buttons.
We recommend that you use a reticle eyepiece.
Very Important: You must point to stars in the west when your telescope is on
the east side of the mount and stars in the east when your scope is on the west
side. When the stars are high and close to the zenith, this can be tricky. However, you can tell which side the star is
on by looking at the “z” number (also called the LST) in the upper right corner of the Choose Star screen, then compar-
ing that number with the R.A. number of the star you choose. If the R.A. number is larger, the star is in the east; if the
R.A. is smaller, the star is in the west. If your scope is not on the correct side, the mount will not slew properly and the
telescope could strike the pier or tripod. See illustration under “Star Sync” on a previous page.
5. Select that star on Keypad. Use the <PREV and NEXT> buttons to scroll through the star list to nd the star you
have chosen. Select this star by pressing the corresponding number. The R.A. and Dec. values of the star will be
displayed. Please note that the LST (local sidereal time) values for your screen will be different than shown here. If you
have made a mistake, use the <PREV button to choose another star.
6. Press GoTo. This enters the star in the calibration memory. The telescope will not move. The Choose Star screen will
come up again.
7. Choose your second star, ideally at least 6 hours difference in R.A and preferably 40 degrees or more different
in Dec. (e.g. Algieba – Gam Leo). Again, the Calibrate Star screen will appear
with the coordinates of your star choice. Again, the lists in Appendix I may be help-
ful in choosing an appropriate second star.
8. Press GoTo. The mount will slew to this star. The target star should appear
somewhere in the eld of a low to medium power eyepiece.
9. Center star with altitude and azimuth adjusters of the mount. Please refer
back to the mount instructions if needed. Do not use the N-S-E-W buttons to
center the star. If the star is not in the eld at all, you will need to make larger
adjustments to the position of your mount.
10. Press Menu to exit this screen. The Choose star screen will appear.
11. You may either end the calibration routine at this point, or continue for more accurate alignment. Remember,
the more accurate your polar alignment, the more accurate your nal pointing accuracy will be.
12. To end the calibration routine, press Menu again.
13. To continue calibration, choose the next star to which you want to slew. You
can chose a new star or go back to the rst star. Again, at least 6 hours difference
in R.A. and 40 degrees in Dec. would be ideal, however you can also pick a star
with less difference. You can go back to the original star you chose (e.g. Antares)
or some other star that is visible in the sky. The display will show the name of the
star, R.A. and Dec. coordinates and the LST.
14. Press GoTo. The mount will slew to this star.
15. Center the star in the eyepiece. NOTE: From this point on, and for all subsequent iterations, move half of the dis-
tance with the altitude and azimuth controls and the other half with the N-S-E-W buttons.
16. Press Menu to exit this screen. The Choose Star list will appear again.
17. Choose a star. The Calibrate Star screen will appear with the coordinates of your star choice.
< Cal Obj: Algieba
RA: 10:19:58
DEC: +19:50:28 Press
LST: 13:55:02 GoTo
Calibrate Star Screen - Algieba
Star: Algieba
RA: 10:19:58
DEC: +19:50:28
GoTo / Menu=Exit
Star RA / DEC Screen
< Cal Obj: Antares
RA: 16:29:24
DEC: -26:25:55 Press
LST:13:53:56 GoTo
Calibrate Star Screen
Choose Star Z=13:52
1=Polaris <
2=Acamar
3=Achernar >
Star Selection Menu - Polaris
< Cal Obj: Antares
RA: 16:29:24
DEC: -26:25:55 Press
LST:13:53:56 GoTo
Calibrate Star Screen
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