Astro-Physics Flat Surface Adapter for 1200GTO or 1600GTO Mounts
AP Flat Surface Adapter for 1200 or 1600GTO MountUsing the FSA with the 1600GTO:The base of the Astro-Physics 1600GTO Mount slips directly into the Flat Surface Adapter (AP-1612FSA). There is no need for an extra pier adapter, as the 1600 incorporates the functionality of the Precision-Rotating Pier Adapter into its base. The extended latitude range of the 1600 also eliminates the need of a polar wedge. Using the FSA with the 1200GTO:
- Interface the Flat Surface Adapter between the Precision-Adjust Rotating Pier Adapter (AP-1200RPA) and the flat plate on your custom made pier or tripod.
- Attach to the top of your 1200 Hi-Lo Latitude Wedge (AP-1200WDG) if you wish to use the 1200RPA.
- Although the Standard Pier Adapter (AP-1200SPA) can bolt directly onto the flat plate of your pier or tripod, you can use this adapter to give a more finished appearance.
The Flat Surface Adapter, which is made of black-anodized precision-machined aluminum, bolts onto the flat surface on the top of your pier or tripod. Your pier's top plate should be a minimum of 9.75-inches in diameter. The 1612FSA itself is 10.345-inches in diameter. It adds 1.265-inches to the height of your mount. The bolt circle for attaching the Flat Surface Adapter to your pier is 9.230-inches in diameter. Please refer to the drawing, located in the Supporting Docs tab, on attachment preparation. The holes for mounting the 1612FSA to your flat surface are counter-bored to accept the head of standard socket head cap screws (13/32-inch or 0.406-inch diameter). This allows the 1600 base or 1200 Pier Adapter to sit in the Flat Surface Adapter without interference. Because installations will vary, screws for mounting the Flat Surface Adapter to your pier or tripod are not provided.Attach to 1200 Hi-Lo Latitude Wedge
Match four holes and bolt the 1612FSA in place. Then, your Pier Adapter simply slips in (just as it fits into the AP pier) and you fasten from the side with the six screws and washers provided with the Pier Adapter for your 1200 mount. Note: You may wish to consider purchasing our Flat Pier Plate with Flat Surface Adapter for 1600GTO and all 1200 Mounts (AP-1612FSA-FP) if you are fabricating your own pier and need a flat plate to fit into the top. Some modification may be required to fit your pier I.D.