Astromania Adjustable Guiding Scope Ring Set with Plate - 90 mm inside diameter (pair) - for telescope tube diameter or finders 63 to 89mm

The guide scope rings from Astromania Optics allow a reliable and above all stable adaption of telescopes parallel to the main instrument. With the knurled thumb screws, the guide scope is adjustable and you can centre a sufficiently bright star in the eyepiece or the the autoguider. And the tube rings are suitable for bigger finder scopes, too. The adaption of the tube rings to the telescope.

• The inner diameter of the tube rings is 90 mm for Telescopes between 63 to 89mm tube diameter can be mounted adjustable.
• The adjustment screws have teflon inlays for avoiding unaesthetic scratches and pressure marks on the telescope while still ensuring reliable clamping.
• Solid metal guide scope rings for compact Finderscope or Guidescope with knurled metal screws. Big screws with maximum grip allow easy use - even with gloves.
• Synta-style dovetail mounting bar, it has two M6 through-holes on both sides for easy adaption to rings. And three threaded through-holes: the center hole has ¼"-20 threads and the two larger holes on either side of center have M8 x 1.25 threads.
• Set: pair of two tube rings made of metal.The Astromania guide scope rings are suitable for small and medium-sized guiding telescopes.eg.Astromania 70mm Compact Deluxe Finder & Guidescope Kit. Ideal for astrophotography for mounting a guide scope parallel to the main telescope.