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

25" Round Mounted Specifications

the CGEM II motor drive system accurately tracks during an exposure

These Celestron Telescopes yield breathtaking views of the moon

Provides extra comfort when higher elevation is needed for observing purposes

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