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Base Plate for 8"/10" Telescopes - GSO FF435 (230mm Base Curve Diameter):
* Direct bolt-on replacement for stock R&P focusers on 8"/10" GSO dobsonians sold under the following brand names: Antares, DSH, Hardin Optical, Zhumell, DBA, and many others.
* Direct bolt-on for Celestron Star Hopper and Meade Light Bridge telescopes.
* May work for some Orion XT dobsonian telescopes. Please measure hole spacing on you
r scope before purchase.
Base plate curve diameter: 9.06" (230mm)
Base plate dimensions: 3.54" x 3.54" (90mm x 90mm)
Hole Spacing (center-to-center along telescope tube/optical axis): 70mm (2.76")
Hole Spacing (center-to-center perpendicular to telescope tube; straight line measurement): 73mm (2.87")
Hole Spacing (center-to-center perpendicular to telescope tube; measured along curve of base plate): 74mm (2.91")
Inside diameter of central hole: 3.07" (77.9mm)