Cut off IR!The ultimate UV and Infrared blocker, Celestron's
UV/IR cutoff filter features ion-beam-hardened coatings, and fine optically polished glass. This filter has an extremely sharp cutoff at 690nm, yet leaves all visible red light, including the important 656nm H-alpha emission line. This prevents IR wavelengths from blurring fine detail in your digital images, making it ideal for CCD imaging.
High-performance featuresFreedom from ghost images (very low reflection multi-coating) enables pinpoint star images and fine planetary detail;
Ion-beam-hardened coatings, which result in a dense, sealed and highly scratch-resistant coating surface,
Threads onto most all 1.25-inch eyepieces and NexImage camera.
Don't go to the star party without an astronomer's red flashlight.