The Melbourne Binocular and Telescope Shop – SIDEREAL
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Modifying the Early Model Sky-Watcher Pier Extension

Pier Extension
Paul

The 20cm Saxon / Sky-Watcher NEQ6/AZ-EQ6 pier extension is a great way to gain the extra height needed to prevent long focal length OTA’s from colliding with the tripod legs. The extension is attached to the tripod using the standard central bolt. Even if the central bolt is tightened as much as possible, it doesn’t take much force to rotate the pier. This can be very annoying if you have carefully polar aligned the mount and it accidentally rotates while you are loosening or tightening the clutches on the AZ-EQ6.

This problem is easy to fix. Luckily the pier base plate is made of aluminium and is very easy to drill. The solution is to drill a 4mm hole very close to edge of the plate and tap it out to 5mm. You can then use an M5 socket head bolt to provide a locking post. The head of the bolt fits nicely into the original post hole on the tripod plate.

Pier plate with M5 tapped hole
Pier plate with M5 tapped hole
Pier plate with post bolt
Pier plate with post bolt
Pier plate with post bolt
Pier plate with post bolt
Pier Extension
Modified Pier Extension
Pier Extension
Pier Extension attached to tripod

With the central bolt tightened it is now impossible for the pier to accidentally rotate.

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