Antlia Filters H-Beta Pro 3nm narrowband filter 2" mounted

Antlia Filters H-Beta Pro 3nm narrowband filter 2" mounted

Technical Data:

Schott optical substrate

2” mounted (2mm+/-0.05mm)

Surface Quality: 60/40 (Refer to MIL-O-13830)

2 sides fine-optically polished to ensure accurate 1/4 wavefront

30 arcsec parallelism

Center-Wavelength of Antlia H-Beta 3nm filter:   486.1nm

H-Beta 486.1nm T＞88%, 88% transmission at H-Beta line 486.1nm

＞OD3（0.1%）@300-1100nm

2 sides Multi-layers anti-reflection coating

Single / Non-glued substrate

DO NOT LOOK AT THE SUN WITH ANTLIA FILTERS. Serious eye damage will result if you fail to observe the warning.