Filters

Antlia Ha 3nm filter

Technical Specifications:

Basic Substrate: Schott optical substrate

Filter Thickness:   2mm+/-0.05mm for 2” mounted

FWHM (Full width at half maximum): 3nm

CWL (Central Wavelength): 656.3nmnm

Peak Transmission: ＞88%

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

Single / Non-glued substrate