Celestron Oxygen III (OIII) Narrowband 48mm Filter (Fits 2" Eyepieces) MCS 70186 2 lb Fluid drag system

2 lb Fluid drag system with smooth start and soft stop technology and balanced diagonal transitions Controls all-in-one-location design for fast

Braided 90% OFC Shielding

while at the same time securing the motor to the clamp

0 Wiring Distance Up to 1

The Audio Harness is designed for the comfort

Celestron Oxygen III (OIII) Narrowband 48mm Filter (Fits 2" Eyepieces) MCS 70186 2 lb Fluid drag systemBlocks 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