Uncategorized · Astrophoto Filter

Antlia Sulfur II (SII) 7nm Prime Narrowband 36mm Filter (ANT-SII-7NM-PRIME-36MM)

Antlia · sold by All-Star Telescope Canada · CAD 224.36 · in stock

Antlia Prime narrowband filters optimize 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 SII/Ha/OIII lines that provides you with the maximum signal and well-defined nebulae structures. Besides,…

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