MaxFR Astronomik photographic narrowband-emission line filters for fast optical systems

There is an ever growing demand for filters suitable for extremely fast optical systems likeCelestronsRASA the Epsilon Astrographs made by Takahashi.
Our novel MaxFR emission line filters are suitable up to very fast focal ratios. The new Astronomik MaxFR series of narrowband-emission line filters is perfect matched to the requirements of astronomical deep-sky imaging with fast optical systems. For the three most important emission lines of oxygen (OIII), hydrogen (H-alpha) and sulfur (SII) you may select your filters either with 12nm or 6nm Bandwidth (FWHM).

Highest transmission:
Our new MaxFR filters are made in a completely new way, designed to work perfectly with fast optical systems. The built-in well known MFR Coating technique gives you the best out-of-band blocking possible across the entire range of wavelengths from the UV up to IR! Your advantage of our new design is aextremely high contrast, minimized stray light,no halosandneedle-sharp stars. The Astronomik MFR narrowband-emission line filters give you the best quality of data: The best start material to be processed to a awesome final image!

• For 12nm MaxFR filters this means a unlimited usability from f/1.7 to f/8 and about 85% of the maximum transmission at a f/1:1.4 as guaranteed.
  
  
• For 6nm MaxFR filters this means a unlimited usability from f/2.2 to f/8 with about 90% of the maximum transmission at a f/2 as guaranteed performance data.