Flat Surface Adapter with Flat Pier Plate for 8" ATS Pier and Non-AP Piers
This adapter is essential for interfacing an 8" ATS Pier or other non-Astro Physics pier with the AP 1100 GTO mount, smoothly transitioning between the base of your mount and the top of the pier. It is also worth seriously considering this adapter if you plan on fabricating your own pier for the 1100 GTO or any 900 mount.
This item is composed of a hybrid of two machined aluminum parts bolted together- a thick flat plate and the flat surface adapter also produced by AP. While this setup is not required if you are using one of Astro Physic's own 8" portable piers, it is necessary for most other piers or configurations when using the 1100 GTO or 900 mounts.
The lower flat plate adapter is drilled and tapped so that the ADATRI can be attached, which permits the Mach1GTO and all 400 and 600E mounts to be attached to your 8" pier.
The base of the 119FSA-FP has already been machined per the specifications provided by ATS to fit into their piers that have 1/8" wall thickness (I.D. 7.700") without further modification. The 1100GTO will fit directly into the top portion of the 119FSA-FP. If you choose to order the 8" ATS Pier with the 1/4" wall thickness, ATS will modify the base diameter for a small up-charge. This adapter adds 1.616" to the height of the ATS pier. When using this item with other piers with the 11000GTO Mount, machine the bottom portion of this plate to fit the I.D. of your pier, if necessary. Please refer to the diagram to determine if your pier is suitable. The base of the 1100GTO will fit directly into the top portion of the 119FSA-FP.
Manufacturer Product Number: 119FSA-FP