ZWO 36mm OIII 7nm Narrowband Filter - OIII7nmD36 127 mm Refractors With three nylon safety screws

With three nylon safety screws to snugly attach the filter to your telescope

Sony’s back-illuminated Exmor R technology provides excellent deep sky performance

Bandpass: 570nm

Unfortunately also the sensitive Etalon filter systems respond to these air pressure variations

IDEAL FOR BOTH LAND AND NIGHT SKY VIEWING

ZWO 36mm OIII 7nm Narrowband Filter - OIII7nmD36 127 mm Refractors With three nylon safety screwsThe 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