USED GEAR INFORMATION This filter is in great condition Description If you're looking to improve the quality of your astrophotography images, the Optolong UV-IR cut filter is exactly what you need! When you block Ultraviolet and Infrared transmissions, you will see improved image sharpness, contrast, and minimized distortion from color fringing. They're especially useful when you're not using a dedicated astronomy camera with built-in filtering. The Optolong UV-IR cut filter blocks Ultraviolet and Infrared transmissions while letting the visible spectral region shine through, which reduces pesky violet star halos! Star halos are often caused by IR and UV light being slightly out of focus; this "unfocused glow" creates a halo around bright stars. When this transmission is reduced, you will see that overall, soft images are a thing of the past. This filter ensures only well-focused visible light reaches the sensor, resulting in tighter, sharper stars. By filtering out just the UV-IR region, you will see that this broadband filter is extremely versatile. You are sure to capture pristine images of Galaxies, Star Clusters, and Reflection nebulae! This filter is not ideal for emission nebulae, you will want to use a dedicated narrowband filter to isolate individual emission lines. With Optolong, you can expect exceptional performance, allowing urban stargazers the chance to witness vibrant, breathtaking details of the night sky! The Optolong UV/IR cut filter blocks Ultraviolet and Infrared transmissions but lets the visible spectral region shine through. The IR (700nm to 1100nm) and UV (300nm - 400nm) part of the spectrum are invisible to human eyes, but not to most CCD and other digital cameras, which are sensitive to 300nm to 1100nm. With the Optolong UV-IR Cut filter installed, violet halos and an overall soft image are a thing of the past. This filter also reflects heat radiation and provides great protection against dust. With the ingenuity from Optolong, you can expect exceptional performance, allowing urban stargazers the chance to witness vibrant, breathtaking details of the night sky! Specifications Model Number UVIR-200 Single Filter, Set, or Accessory Single Filter Filter Type UV/IR/Luminance Filter Size 50.8mm (2") Filter Shape Round Filter Insert Style Threaded
