ZWO 36mm OIII 7nm Narrowband Filter - OIII7nmD36 80mm refractor Protect the sensor from dust

Protect the sensor from dust and humidity

The cover has a 90" circumference and 69" height

Information about binoculars and telescopes

75 filter thread: M76x1 - M68x1

ZWO 36mm OIII 7nm Narrowband Filter - OIII7nmD36 80mm refractor Protect the sensor from dustThe ZWO narrowband OIII 7nm filter is designed for nebula observation by allowing a 7nm bandwidth of light to be centered on a wavelength of 500nm (which corresponds to OIII emission lines), and blocking out all other light. Adding the ZWO OIII Narrowband filter to your imaging collection will help you go beyond RGB imaging and will help capture your favorite nebulas in a new light, no matter how polluted your skies may be! This ZWO OIII 7nm Filter is