The ZWO 2" Duo-band filter helps in increasing visibility and contrast in order to enhance your viewing experience. This filter helps you see the celestial objects helps in passing at 2 wavelengths: H-alpha (656nm) and OIII (500nm). This Duo-band filter helps in decreasing any unwanted light that may hinder your viewing such as moonlight, and street lights. These filters solve the problem of photographing objects in an area with heavy light pollution, making viewing and photography way easier.

Specs: 

• Thickness: 1.85 mm
• Bandwidth: HA (15nm) OIII (35nm)
• Surface quality - 60/40 
• Schott substrate material
• Allows more than 90% transmission at major OIII line 486.nm1, 496nm and 501nm.
• Ensures more than 80% transmission at Ha line 656.3nm

 

About ZWO Optical: Astrophotography has never been easier

Established in 2011, ZWO Optical is a fast-growing global astroimaging camera powerhouse based in Suzhou China. They focus on building and innovating groundbreaking CMOS cameras such as the iconic ZWO ASI120MM Monochrome CMOS camera (the first-ever planetary CMOS camera to beat a CCD in the early 2010s). ZWO continues to pioneer new astrophotography technology with revolutionary features to capture exceptional quality of images of space that will last you a lifetime. Today, ZWO cameras are recognised by every passionate astrophotographer and are available in over 25 countries internationally.

Product Code: DB2