The STC Astro Duo Narrowband Filter 2″ targets the Ha and OIII emission lines to deliver very high contrast colour images for one shot colour and DSLR cameras. Superior, more durable coatings and narrower bandpass for better LP rejection than similar filters on the market.
The STC Astro Multispectra filter is a light pollution suppression filter mainly designed for imaging BroadBand objects like Galaxies and Clusters, which also enhances Nebulae with good colour balance.
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