The TPO 1.25" UV/IR Blocking Filter is perfect for imaging applications with digital cameras, webcams and CCD cameras. The UV/IR filter effectively blocks both the ultraviolet and infrared wavelengths, eliminating star halos and other unwanted light - thus improving image consistency and results.
Statistically, the TPO 1.25" UV IR filter has a sharp cutoff at 400nm. This means our store brank 1.25" UV/IR filter blocks over 99% of light past 410nm, effectively eliminating the ultraviolet. The TPO UV/IR filter also blocks has a sharp cutoff at 690nm and blocks over 99% of light past 700nm in the infrared. Transmission between 420nm and 680nm is over between 95% and 98%, with an average transmission over 96%. Transmission of the TPO UVIR blocking filter for astrophotography in the important H-Alpha wavelengths is at 97%.
Why pay more when we can purchase in bulk from the manufacturer and pass the savings on to our customers? TPO astrophotography filters provide excellent performance and great value compared to brand name filters.