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Celestron – RASA 8 Imaging Filter – H-Alpha, H-Beta, Oxygen III Narrowband Filter – Enhances Emission Nebulae
Bring out the best in your nebulae astroimages with the H-Alpha-H-Beta-OIII Imaging Filter for the 8” RASA. This specialized filter allows high transmission of light from emission nebulae while blocking light pollution and natural sky glow. This helps to make your images pop with detail off the black sky background with superior contrast. The Imaging Filter transmission spectrum is 85% or greater at key wavelengths 656nm) and less than 0.5% transmission elsewhere. These wavelengths will make emission nebulae like the North America Nebula (NGC 7000) and Lagoon Nebula (M

Price is $230.00
Price: $229.99