Optolong UV-IR Cut 2" Mounted Filter

The Optolong UV-IR Cut 2" Mounted Filter is an essential tool for astrophotographers seeking crisp, high-contrast images. By selectively blocking ultraviolet (300–400nm) and infrared (700–1100nm) light, it minimizes star halos, color fringing, and softness often caused by out-of-focus UV/IR wavelengths reaching the sensor. This versatile broadband filter ensures that only the well-focused visible spectrum reaches your camera, producing tighter stars and enhanced clarity—especially beneficial when shooting galaxies, reflection nebulae, or star clusters.

Crafted using Schott B260 glass and ion-assisted anti-reflection coatings, the filter delivers edge-to-edge optical precision and durability. Whether used with a DSLR, CCD, or CMOS camera, this 2" threaded filter integrates easily into your imaging train and provides excellent compatibility with filter drawers, wheels, and eyepieces. Experience stunning results even from urban skies with this powerful yet refined accessory.

• Filter Type: UV/IR Cut (Luminance)
• Blocked Spectrum: UV (300–400nm), IR (700–1100nm)
• Transmission: Visible light only
• Size: 50.8mm (2")
• Shape: Round
• Mount: Threaded filter cell (M48 x 0.75)
• Material: Schott B260 glass substrate (Germany)
• Coatings: Multi-layer anti-reflection (ion-assisted deposition)
• Surface Quality: 60/40 (MIL-O-13830)
• Application: Ideal for galaxies, reflection nebulae, and star clusters
• Not Suitable For: Emission nebulae (use narrowband filter instead)

• Optolong 2" UV-IR Cut Filter
• Protective Filter Case