OGMA UV/IR Cut Filter 36mm Unmounted with Blackened Edge for Astronomy


Edge treatmentBlackened
Physical thickness1.85mm
UV cut off< 400nm
IR cut off> 700nm
Transmission of visible light> 95%
Transmission off band< 0.1%
Surface quality60/40 (MIL-O-13830)
Surface polished1/4 wavefront
Surface parallelism< 30 seconds


OGMA UV/IR Cut Filter Graph


Even though each manufactured batch differs slightly, this is a typical transmission curve of our OGMA UV IR Cut filter.

As you can see, the following emission lines that are important for astrophotography are passing at > 95%.

  • Hydrogen Alpha (H-Alpha): 656nm
  • Sulphur II (SII): 672nm
  • Nitrogen II (NII): 654nm and 658nm


OGMA warrants your product to be free from defects in materials and workmanship for one year. OGMA will repair or replace a product or part which, upon inspection by OGMA, is found to be defective during one year following the date that you receive the equipment.

For specific details, read OGMA's limited warranty.