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Astronomik H-Alpha 6 nm CCD Filter - M52 Round Mounted - HA6-M52

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SKU: ASF-HA6-M52

Astronomik H-Alpha 6 nm CCD Filter - M52

  • This Astronomik H-Alpha CCD Filter with M52 threads is made exclusively for astrophotography
  • Designed with the finest technical standards in mind to permit the desired optical performance for deep sky CCD imaging
  • Provides maximum contrast for H-Alpha emitting objects, allowing them to pass through while blocking the entire remainder of the visual spectrum plus IR
  • Extremely narrow 6 nm FWHM bandwidth
  • Blocks common sources of light pollution such as mercury and sodium emissions
  • Made in Germany, a country recognized for producing superb quality optics!


More About Astronomik H-Alpha 6 nm CCD Filters

The Astronomik 6 nm H-Alpha Filter is an exceptionally narrow emission-line filter designed to be used with devices as fast as f/3.5 for CCD imaging applications only. This filter will not accommodate visual or solar operations. It simultaneously permits spectral lines from h-alpha emission nebulae to pass through to your sensor while intercepting the complete remainder of the spectrum.

With a 6 nm full width at half maximum (FWHM), this filter is optimized to display maximum contrast between objects in the h-alpha spectral area, emission nebulae for example, and the skyglow background. While the 12 nm offers similar functionality, the 6 nm provides higher contrast gain because of its smaller FWHM. As a compromise, some background stars will be dimmed or completely eliminated from the final image. To avoid this, use both the 6 nm and 12 nm filters together to allow for maximum contrast without any reduction in your final image's background quality.

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.

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