iOptron SkyTracker Instruction Manual page 10

chart. For example, on December 3, 2012, 12:48:36 in Boston, USA (Lat N42º30'28" and Long
W71º08'49"), the Polaris Position is 10hr 24.1m and r = 40.8min (the green dot on the chart).
Adjust the mount in latitude (using Latitude Adjustment Screw) and azimuth (heading, adjusting tripod)
direction to place Polaris in the same position on the Polar Scope Dial as indicated on your
iPhone/iPad screen. In this case, the Polaris will be located at a radius of 40.8' and an angle of 10
hour 24.1 minute.
If you don't have this application, you still can get a better polar alignment by placing Polaris at the
center of the polar scope dial.
STEP 6. Install ball head
Take off the camera mounting block from the SkyTracker by releasing two thumb screws that hold the
camera mounting block in place, as indicated in Figure 15. Mount the ball head (available as
accessory) onto the camera mounting block by threading it onto the brass central mounting screw
(Figure 16). Make sure they are tightened enough that there is no relative movement between the
mounting block and ball head. Reinstall the mounting block with ball head back to the SkyTracker.
Tighten the thumb screws to make sure that the mounting block will not slip.
Figure 15. Remove camera mounting block
Figure 16. Install ball head
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