Multi-Star Alignment; Test Backlash - iOptron SmartStar iEQ45 Instruction Manual

mount at the "Zero Position," use ▲ and ▼ buttons to select a star and press ENTER. Center the target in
your eyepiece using arrow key. Press ENTER when finished. If your mount is well set up and polar aligned,
one star alignment should be sufficient for good GOTO accuracy. To increase the accuracy you may
choose to do two star alignment.

5.4.4. Multi-Star Alignment

With iOptron's multi-star alignment, you can choose two, three, or as many stars as you want to
reduce the mount alignment offset.
Press MENU button and select "Align". Select "Multi-Star Align" in the align menu. A list of
alignment stars that are above the horizon is computed based on your local time and location. With the
mount is at the "Zero Position," use ▲ and ▼ buttons to select first alignment star and press ENTER.
Center the target in your eyepiece using arrow key. Press ENTER when finished. The hand controller will
prompt you to choose the second star. If the star you choose is too close to the first one, the system will let
you choose another one. When you are aligned with the second star, the two star alignment is finished. You
can reject the suggested star if it is blocked by a tree or other obstruction.
If you've done with the two star alignment, press the BACK button to finish the alignment. Press
ENTER key to select third star for further alignment.

5.4.5. Test Backlash

This function is used to test the R.A. and DEC backlash value. The saved numbers will show in "Set
Anti-backlash" menu. To get better results, perform this function on a land object during daytime and use a
cross-hair eyepiece.
Lower the mount altitude to its lowest position. Release the R.A. clutch to move the telescope to
east or west side of the mount. Tighten the R.A. Clutch Screws. Release DEC clutch and put the telescope
in horizontal postion.
To test the backlash, point the telescope to a tip of a distant object, such as a telephone pole. Select
"Test Backlash" under "Align" menu and press ENTER:
R.A. axis test
Press "►" or "◄" to
target then press
"ENTER"
Using "►" or "◄" to move the object to center, press the ENTER button. Do not move over the
center. You may use a slow speed when the object is close to the center. The LCD screen will change to
R.A. axis test
Press "►" return to
target then press
"ENTER"
Follow the on-screen instruction to bring the object back to center again and press ENTER. The
screen will show
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