Lumicon 2 UV/Infrared Filter LF3145 - High-Quality Optical Filter for Astronomy & Photography - Perfect for Telescope Imaging and Scientific Research

Lumicon's 2" Infrared Blocking Filter is perfect for using with a reflecting telescopes when astro imaging. When used with a refracting telescope, this filter can also "bracket" the color-corrected band of the OTA. 

Most digital/CCD cameras have built-in infrared filters, in which case the Infrared filter may be used. The Infrared filter blocks wavelengths shorter than about 400 nm. If your camera does not have a built-in infrared filter, the Infrared Blocking Filter is recommended, which blocks all wavelengths longer than 750 nm. This filter is specifically designed as an IR blocking filter.