This professional UHC filter adopts 30nm narrowband coating technology to accurately lock the 496nm/501nm dual emission line, which can suppress 90% of urban light pollution (sodium lamp/mercury lamp) and dilute the background skylight by 2.5 magnitude. It is measured to improve the details of ionizing hydrogen by 300% in Orioni M42, and the shell structure of the annular nebula M57 is clearly displayed.

The aluminum alloy lens ring is precision machined by CNC (tolerance ±0.01mm), with 9H hardness lenses, and the weight is only 0.2kg, which is perfectly suitable for the 2-inch large field of view eyepiece system. The standard protective storage box is the first choice for cost performance in urban deep space observation and photography.

Whether you are a seasoned astronomer or a beginner exploring the wonders of the night sky, the Kson 2" UHC Telescope Filter is an indispensable tool for unlocking the beauty of nebulae. Its ability to significantly reduce light pollution and enhance visibility makes it an invaluable asset for observing celestial objects with unparalleled clarity and definition.

● Kson 2″ UHC (Oxygen 3) Filter

● Plastic Case for safe, dust free storage