ERF Prefilter - Energy Rejection Filter

BelOptik ERF energy rejection filters are protection prefilters for significantly reduce the heat and radiation power at the focus. They are used primarily in connection with an H-alpha filter system.

105mm ERF RG630 IR cut

- H-alpha bandpass interference filter
- FWHM 50nm @656.28nm
- Schott glasses RG630 longpass
- IR block coating 680nm - 1450nm
- diffraction limited imaging
- T ~90%
- Thickness 5.3mm
- Diameter 105mm or 125mm
- Aluminium filter cell optional

ERF 105mm...449
,- EUR   (out of stock)
ERF 125mm...649,-
EUR   (still 1pcs in stock)
Filter cell...from
179,- EUR