Filtro de telescopio Svbony CLS EOS-C Filtro clip-On Compatible para el filtro de reducción de luz de la ciudad de banda ancha Canon para cámaras CCD DSLR
- Marca: SVBONY
- Código de Producto: B079BW1TQ2
-Electron beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching;as well as stability on CWL (central wavelength) no deviation affected by temperature change
-Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off band
-90% transmission of main nebula emission lines;such as Ha 656nm;OIII 496nm&500nm;SII672nm and H-beta 486nm
-0.1% transmission of off-band;specifically the major emission lines of artificial light pollution;such as Na 589nm;Hg 435nm and 578nm
-Urban optical filter can effectively suppress urban harmful light and improve the contrast of shooting target
-Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off band
-90% transmission of main nebula emission lines;such as Ha 656nm;OIII 496nm&500nm;SII672nm and H-beta 486nm
-0.1% transmission of off-band;specifically the major emission lines of artificial light pollution;such as Na 589nm;Hg 435nm and 578nm
-Urban optical filter can effectively suppress urban harmful light and improve the contrast of shooting target