Antlia Filter 4.5nm Narrowband SII EDGE Filter 1.25'' Mounted

Antlia Filter 4.5nm Narrowband SII EDGE Filter 1.25'' Mounted

• Basic Substrate: Optical, Single / Non-glued substrate
• Filter Thickness: 2mm+/-0.05mm for 1.25”
• FWHM (Full width at half maximum): 4.5nm
• CWL (Central Wavelength): 671.6nm
• Peak Transmission: ＞90%
• Blocking: > 5 OD(0.001% out of band blocking) @ 300-1000nm
• Surface Quality: S/D (scratch/dig)= 60/40 (Refer to MIL-O-13830)
• Transmitted Wavefront: Lambda/4 or better. Parallelism: less than 30 arcsec