If you are using OATControl, confirm that it is centered by clicking Done, if you're using the LCD press SELECT to confirm. You may need to mark your laptop screen somehow from pic to pic so you can see how the movement of the mount corresponds to the star movement. If you're taking pictures (as opposed to Live View), move the mount in one direction only between pictures to see where the star goes. After the slew, physically move the mount (via the single back M14 screw and via rotating the whole mount) such that Polaris is in the dead center of your viewfinder. The mount will move for a bit, mostly around RA. This requires you to use your camera If you are using OATControl click on Polar alignment, if you're using the LCD: select CAL > Polar Alignment Next, you will need to Polar Align the mount. to record the Live View image both EOS Camera Movie Record (free) and BackyardEOS do the job. If you are using OATControl, use the four directions to center the RA and DEC ring like shown, then click Set Home. Celestron All-Star Polar Alignment: how to do it right. If you are using the LCD, use the four arrows to center the RA and DEC ring like shown and press SELECT, then Yes to confirm. This is the position you will have to bring it in every time you set it up! In the Southern Hemisphere, it is turned around.Īlign the home marker in the middle of the RA ring with the indicator of the RA motor mount.Īlign the two sprockets of the DEC wheel with the RA Ring, so that the DEC assembly points 90° to the RA Ring. This is how OAT should be aligned to North and South in the Northern Hemisphere. This adjustment does not need the camera, it is purely physical, using the OAT hardware. Homing means rotating the RA ring to be centered and the DEC ring rotated such that the camera points out of the RA ring at 90 degrees (see figure below).
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