Astronomik H-Alpha 6 nm CCD Clip Filter - Nikon Z XL - Used

• This Astronomik H-Alpha 6 nm Nikon XL Full Frame CCD Clip Filter is Used and in Excellent Condition. Upon inspection, we found that the filter is fully functional. The factory hard case is present. There are no defects or scratches.

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• Comes with High Point 90-Day Warranty

Astronomik H-Alpha 6 nm Nikon Z XL CCD Clip Filter

• Featuring a Nikon Z XL clip format, this Astronomik 6 nm H-Alpha CCD Filter.

• Made with regards to the finest technical standards to allow top-of-the-line optical performance for deep sky imaging with CCD cameras

• Simultaneously allows H-Alpha emissions to pass and blocks almost the entire remainder of the visual spectrum including IR

• Approximately 6 nm of FWHM bandwidth

• All unwanted light pollution is blocked, making this filter optimal for imaging supernova residue as well as planetary nebulae

• Made in Germany, a country noted for their superb quality optics!

More About the Astronomik H-Alpha 6 nm CCD Filter

An extremely narrow emission-line filter, the Astronomik 6 nm H-alpha filter is for CCD imaging work and not for visual or solar applications. It is designed for use with instruments as fast as f/3.5. This narrowband filter allows the h-alpha light from emission nebulae pass through to your sensor while blocking other areas of the spectrum almost completely.

This Astronomik H-Alpha CCD Filter has an FWHM of 6 nm, making it optimal for presenting maximum contrast between objects that give off h-alpha light such as emission nebulae, and the airglow background. While the 12 nm provides functionality analogous to the 6 nm, the latter offers higher contrast gain due to its reduced FWHM. As a result, some background stars will be dimmed or won't appear at all in the final image. This can be avoided simply by using both the 6 nm and 12 nm filters at the same time, allowing for maximum contrast in h-alpha objects while maintaining the visibility of the background stars in the resulting image.

Given that the Astronomik 6 nm H-Alpha CCD Filter completely suppresses the main offenders of light pollution, mercury (Hg) and sodium (Na) emissions lines, it makes for an excellent filter for use in a light-polluted environment. Learn more about the Astronomik XL Clip filter for Nikon Z XL cameras in the comprehensive video below!

Please note this filter must NEVER be used for solar observing or imaging. Doing so will cause permanent damage to your eyes.