Lumicon 2 Inch Deep Sky Filter
Lumicon 2 Inch Deep Sky Filter is the best all-purpose nebula filter on the market today. It blocks all high & low pressure mercury and sodium vapor lamp light, neon lights and air glow, while transmitting the rest of the visible spectrum.
Visually, Lumicon 2 Inch Deep Sky Filter enhances contrast of nebula under both light-polluted and dark skies and also passes infrared light, making it an excellent filter for photographing most deep space objects through light-polluted skies.