With the knurled thumb screws, the finder-guide scope is adjustable and you can centre a sufficiently bright star in the eyepiece or the the autoguider. Set: pair of two tube rings made of metal, the Astromania finder-guide scope rings are suitable for small and medium-sized guiding telescopes; ideal for astrophotography for mounting a finder-guide scope parallel to the main telescope And the tube rings are suitable for bigger finder scopes, too. MDT Lightweight Scope Rings - Premier-404 Astromania adjustable tube rings for astrophotography.Set of 2 guide scope rings for guide scopes between 34 mm and 85 mm tube diameter. The guide scope rings from Astromania Optics allow a reliable and above all stable adaption of telescopes parallel to the main instrument Set of 2 finder-guide scope rings for finder-guide scopes between 34 mm and 85 mm tube diameter. Most common use is astrophotography. Solid metal finder-guide scope rings for compact telescopes and finders with flat support surface and knurled metal screws Astromania adjustable tube rings for astrophotography. Therefore, the rings fit directly to the TSFDA or TSPKM dovetail clamps. About this item The inner diameter of the tube rings is 90 mm for Telescopes between 34 and 85 mm tube diameter can be mounted adjustable The adjustment crews have teflon inlays for avoiding unaesthetic scratches and pressure marks on the telescope while still ensuring reliable clamping Solid metal finder-guide scope rings for compact telescopes and finders with flat support surface and... The inner diameter of the tube rings is 90 mm for Telescopes between 34 and 85 mm tube diameter can be mounted adjustable M6 Thread Rings ASTROMANIA SKU-AM-AGSR90 Guiding Scope Rings Inside Adjustable Guide Scope Rings
