Astronomik OIII 6 nm CCD Filter - 2" Round Mounted

Astronomik OIII 6 nm CCD Filter - 2" Round Mounted

• Designed specifically for astrophotography, this Astronomik 6 nm OIII CCD is mounted in a round, 2" cell

• Close to full transmission in the OIII line

• FWHM bandwidth of around 6 nm

• Optimal for imaging planetary nebulae and supernova remnants

• Astronomik's multi-layer coating technique safeguards this filter against damage caused by scratching, aging, and high humidity

• This 2" OIII 6 nm filter is diffraction limited and therefore will not reduce the optical performance of your telescope

• Made in Germany, a country recognized for its superior quality optics!

More About the Astronomik 2" OIII 6 nm CCD Filter

Whether working from an optimally dark site or in severe light pollution, this OIII CCD filter from Astronomik is ideal for OIII nebulae imaging. Provides full blockage of artificial light pollution such as high and low-pressure sodium and mercury lights, natural airglow, and light from the Moon. The contrast between objects in the OIII line (501 nm) and the background will become abundantly clear. In addition, OIII filters enable much broader imaging capabilities as green and blue objects can now be imaged.

Using this filter guarantees 88% transmission or more at OIII (501 nm). This filter is made to Astronomik's exacting standards. While transmission ratings may vary between each filter, you are guaranteed a transmission rating greater than 88%, with a typical transmission rating of around 92-95% for the 6 nm OIII. The specific T-Max will be listed on the filter case. You can rest easy knowing that every unit is thoroughly tested and guaranteed to meet Astronomik's stellar benchmark of performance!

A fitting choice for imaging faint objects in areas of the Milky Way that are densely packed with stars, or for observing from heavily light-polluted locations. This filter's 6 nm is matched to enable premium performance with CCD and CMOS sensors with a very low dark current! Furthermore, a new MFR coating technique allows this 6 nm OIII filter to be used on all telescopes and other instruments with focal ratios up to f/4 without a decrease in performance.

This filter, like all Astronomik filters, is parfocal with all other Astronomik filters. The Astronomik 2" OIII 6 nm CCD Filter is extremely thin at only 1 mm in thickness, but it offers high resistance to scratching as well as the effects of aging and high humidity. It's also diffraction-limited limited so your telescope's optical performance will be maintained. Filters from Astronomik arrive with a superior quality, durable plastic storage container.