Astro-Physics 900 Standard Pier Adapter

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Astro-Physics 900 Standard Pier Adapter
Item # AP-900SPA
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Waiting List

  • For all versions of Astro-Physics 900 mounts, this Standard Pier Adapter mounts directly to an AP Portable Pier.
  • The machined flat plate attaches to the post of the pier assembly with six screws. Four machined aluminum lock knobs hold the mount securely in place.
  • This accessory does not come standard with current 900GTO mounts. You will need to choose an adapter plate to mount your 900 to a pier or tripod.


The Astro-Physics Standard Pier Adapter includes a machined flat plate, four machined aluminum lock knobs with 1/4" ID x 1" OD flat washers, azimuth adjuster block, six 5/16-18 x 5/8 socket buttonhead screws and 5/16 x 9/16"OD x 0.060" flat washers. All machined parts are black anodized and the fasteners are stainless steel.

The 900SPA adapter plate will either fit into your Astro-Physics pier and is bolted from the side or bolts on top of a flat surface. Three additional holes are tapped into the top to allow the AP Tripod Adapter Plate (ADATRI) to be used on an 8" pier.

More information on the AP Standard Pier Adapter.

Additional Information

Additional Information

Manufacturer Astro-Physics
Warranty Limited Warranty
Included Items

Included Items

  • One Machined Plate
  • Four Machined Aluminum Lock Knobs with 1/4 ID x 1" OD Flat Washers
  • Azimuth Adjuster Block
  • Six 5/16-18 x 5/8" Socket Buttonhead Screws
  • Six 5/16 x 9/16" OD x 0.060" Flat Washers
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