Celestron Oxygen III (OIII) Narrowband 48mm Filter (Fits 2" Eyepieces) Networked Audio Systems 1 cm) to a maximum

1 cm) to a maximum height of 13

8" (19 to 20 mm) Weight 1

Full bounce and swivel lighting is possible due to -7 to 90° tilt and 270° of rotation with the locking flash head

Material: Semi-conductive PVC

Impact Deluxe Varipole Support System - Silver (Pair)

Celestron Oxygen III (OIII) Narrowband 48mm Filter (Fits 2" Eyepieces) Networked Audio Systems 1 cm) to a maximumBlocks Longer Wavelengths Better Highlights Nebulae The narrowband oxygen III filter yields high transmissivity through blocking unwanted longer wavelengths of light that aren't involved in your attempts to observe, giving higher contrast to your observing and photographic experiences. By isolating solely the two doubly ionized oxygen lines( 496 & 501nm lines ) emitted by planetary and emission nebulae while blocking the rest of the overall spectrum