900 Precision-Adjust Rotating Pier Adapter with Azimuth Bearing (900RPA)
This item is out of stock but you can place an order now and we’ll ship when it becomes available.
The new pier adapter rotates on a bearing surface for ultra-smooth operation. This allows you to lock the mount down with no need to loosen the base during azimuth adjustment. The top plate of the adapter rotates through the 900GTO mount’s full 15 degrees of azimuth motion. (It does not rotate through a full 360 degrees!) This option is especially recommended for use in the field. You may wish to purchase two or more of these assemblies to install on separate piers. Perhaps you have a permanent observatory and a portable pier for traveling to dark sky sites. The Standard 900 Pier Adapter (900SPA) is another option to consider. More information and Instructions (PDF)
The Precision-Adjust Rotating Pier Adapter includes two machined plates, four machined aluminum lock knobs with 1/4 ID x 1"OD flat washers, 1.9" 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. This adapter will mount directly into an Astro-Physics Portable Pier.
Mounts: All 900 mount models (HDA, QMD, SMD and GTO) that have been produced.