Used Astronomik Ha-CCD 12nm Clip Filter for APS Canon-UT-11942-SOLD

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  • $109.00
  • Regular price $189.00

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  • This is a used filter in excellent condition
  • 97+% transmission for the H-Alpha line
  • Blocks nearly the whole remainder of the visual spectrum
  • Blocks unwanted wavelengths in the infrared


Used Astronomik Ha-CCD 12nm Clip Filter for APS Canon-UT-11942-SOLD

The Astronomik H-Alpha 12 nm EOS Clip Filter is the perfect narrowband filter for deep sky astrophotography with Canon EOS cameras. A full width at half maximum (FWHM) of 12 nm is optimal for Canon cameras, permitting the use of extremely fast optics. The f/number application range extends from 1:2.8 to 1:15. Transmission losses and chromatic distortions, which can be a problem with other filters, only crop up when super bright aperture ratios of 1:2 and more are involved. Other advantages of this filter include an up to 99% transmission and good guide star availablility for cameras with a built-in autoguider.

The contrast between objects with H-Alpha emission lines and the airglow background is increased by the Astronomik H-Alpha EOS Clip Filter. This filter completely suppresses artificial emission lines such as those from mercury and sodium-vapor, as well as airglow, making it a great filter for opposing light pollution! Due to the high optical quality of the H-Alpha EOS Clip Filter's substrate, you will see the same razor sharp stars you would see from your regular telescope.

Delivered in a high-quality, long-lasting plastic storage container, the Astronomik H-Alpha 12 nm EOS Clip Filter is parfocal with all other Astronomik filters. It completely blocks all unwanted wavelengths in the visible and IR bands of the spectrum. This filter has a very thin substrate and is diffraction limited for maintaining the quality of fine images from your telescope. In addition, it offers very high resistance to impurities caused by scratching, aging, and high humidity.


Warranty90 Day


  • Astronomik Ha 12nm clip filter
  • Protective plastic case


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