Antlia Pime 7 nm Narrowband filters

Antlia Prime narrowband filters optimizes the FWHM (full width half maximum) to 7nm bandpass. The suppression of optical density is (OD)4 on unwanted wavelengths.The excellent optical coating characteristics found in the Antlia 3nm Pro series has been incorporated into the 7nm Prime narrowband filters. The result is that these filters deliver superior SNR (signal to noise ratio) and better contrast in your images. Antlia 7nm Prime filters are designed to deliver 90% transmittance at the emission lines that provides you with the maximum signal and well-defined nebulae structures. Besides, in case of the Ha filter it is wide enough (7nm bandwidth) to pass emission lines at NII 654.8nm and NII 658.3nm.

The out of band blocking specification is rated OD4 (0.01%) which delivers an excellent SNR (signal to noise ratio) and effective cut-off rate to minimize interference from other wavelengths. Improved sharp cut off astrophotography 7nm Prime filters are designed to minimize halos around bright stars. Antlia 7nm Prime filters can be used with nearly all systems as fast as f/2 with minimal loss in emission signal and meets the requirements of fast optics.