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Polar alignment alt/az alignment Home Positions

Polar alignment alt/az alignment Home Positions Meade ETX-70AT, ETX-90Ec, ETX-125EC, ETX-105EC Telescope
 
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There is an option in the Autostar that sets the Mount for Meade ETX telescopes. You can choose to put the telescope in the Polar or Alt/Az position. This refers to the HOME position of the Meade ETX telescope. This is the initial position that you must place the telescope in when you start the Polar alignment or Alt/az alignment procedure. You must place the telescope in the same position that you chose in the Meade Autostar. Meade DS series telescopes cannot operate in Polar position

Polar Alignment Home Position

The official Meade manual for the Meade ETX-90EC and Meade ETX-125EC does not include good instructions on how to place the telescope in the Polar mount position. To make matters worse, the picture provided in the ETX-90EC and Meade ETX-125EC manual of the Polar position is incorrect. This, in itself, can cause confusion.

Polar alignment home position characteristics

1) The telescope should be pointed to the general direction of North.
2) If you are facing north, the computer control panel should be on the left (west) side. 
3) The telescope should be turned counter clockwise until it reaches a hard stop and reversed back so that the DEC dial is above the computer panel.
4) The fork arm should be leveled.
5) The DEC dial should point to 90° on the DEC dial.
6) The latitude adjustment on the tripod should be set to the latitude of your location.
7) OTA should point at NCP.Alt/Az Position

Polar alignment home position

Alt/Az Home Position

Alt/Az home position characteristics:

1) Tripod/telescope base should level.
2) If you are facing north, the computer control panel should be on the west side.
3) The telescope should be turned counter-clockwise until it reaches a hard stop and reversed back so the DEC dial is above the computer panel.
4) The OTA should be level.
5) The DEC dial should be at 0°.
6) The OTA should point to North. Refer to Figure 6.

OTA leveled and DEC dial at 0°
Alt/Az Home Position

 
 
 
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