Enhance your 8″ Newtonian telescope with this high-quality GSO Spider with Collimation Capability. Designed for DIY improvements or upgrades, this rugged secondary spider fits tubes with an inner diameter of approx. 231 – 240 mm and supports a wide range of secondary mirror holders. Built-in collimation threads allow precise alignment of the secondary mirror, improving performance for both visual observing and astrophotography. Its matt-black stainless steel construction ensures durability and minimal stray light, making it an ideal choice for serious telescope makers and hobbyists.
Manufacturers & Suppliers of Astronomical Telescopes Since 1976