William Optics STC Astro Duo-Narrowband Filter - 48 mm - YF-STC-ADN Celestron Connect your device to NexStar

Connect your device to NexStar Evolution's built-in wireless network and explore the universe with the Celestron mobile app for iOS and Android

the CGEM II motor drive system accurately tracks during an exposure

2“ BARREL (MM) 21 mm SLIP PROTECT SAFETY Safety Kerfs EYEPIECE BODY ABOVE REFERENCE PLANE (MM) 95mm LENGTH OF 1¼" BARREL (MM) 24 mm LENGTH OF 2" BARREL (MM) 21 mm OUTER DIAMETER 55 mm OPTIONAL ACCESSORIES Dustcap Storage Holster SPECIAL FEATURES Photo-luminescent engraving: lets you find the correct eyepiece at all times INCLUDED ACCESSORIES Cordura eyepiece holster for fast access OUTER CONNECTION (EYEPIECE/-CAMERA-SIDED) Thread

6 Truss-Tube Dobsonian is their largest aperture telescope

William Optics STC Astro Duo-Narrowband Filter - 48 mm - YF-STC-ADN Celestron Connect your device to NexStarWilliam Optics STC Astro Duo Narrowband Filter 48 mm TC Astro Duo Narrowband Filter from William Optics 48 mm Size Clip Filter Dual Band type Light pollution type filter Enhances H alpha and Oxygen III wavelengths Professional Ion Beam assisted deposition and AR coating technology This is a William Optics STC Astro Duo Narrowband Filter 48 mm size. STC Astro Duo Narrowband filter can reduce the interference from artificial lighting (man made light