Bandwidth 20nm, peak 656nm, transmittance about 85% with 135mm focal length long lens H-Alpha filter 656nm 20nm narrow bandpass filter for camera telescope astronomical photography
Description
Country of origin: CN (country of origin)
Material: Glass
Model: NP656
Bandwidth 20nm, peak 656nm, transmittance about 85% with 135mm focal length long lens H-Alpha filter 656nm 20nm narrow bandpass filter for camera telescope astronomical photography