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ZWO O-III 7nm 2-inch Filter
The ZWO OIII 7nm Filter 2" is designed to see deep sky objects. These filters' main purpose is to reduce the transmission of any unwanted artificial light caused by the oxygen emission, that may cause hindrance. Therefore, these filters help in increasing contarct among the nebula and the night sky, giving you a clearer view of the objects.
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The ZWO O-III 7nm 2-Inch Filter is engineered for astrophotography, allowing light within a narrow 7nm bandwidth centered at the 500nm wavelength to pass through. This wavelength corresponds to OIII emission lines, enhancing the visibility of nebulae by improving contrast and reducing interference from other wavelengths, particularly in light-polluted environments.
Constructed with fine-optically polished glass, the filter ensures 1/4 wavefront accuracy, offering sharp and precise imaging. It features a mechanical thickness of 7.5mm, including a 5mm filter glass and 2.5mm thread depth. The filter is equipped with an M48.5x0.75 male thread for compatibility with standard 2-inch filter holders and adapters.
Specs:
Size: 2″
Thickness: 5mm+2.5mm(thread)
Thread: M48.5*0.75 male thread
About ZWO Optical
Established in 2011, ZWO Optical is a fast-growing global astroimaging camera powerhouse based in Suzhou, China. Known for its iconic ZWO ASI 120MM Monochrome CMOS Camera, the first-ever planetary CMOS camera to beat a CCD in the early 2010s, ZWO has pioneered new astroimaging technology with revolutionary new features, including USB 3,0, cooled systems, ADC and more. Today, ZWO Cameras is known by every passionate astrophotographer and is available in over 25 countries world-wide.
Product Code: OIII7nm2