Astronomik L-3 UV-IR Block 1.25" (M28.5)
Key specifications
| Filter type | UV/IR Cut |
|---|---|
| Filter size | 1.25" |
| Mounted | Yes |
About
The narrowest-window member of Astronomik's three luminance filters, blocking ultraviolet and infrared for the L channel. Designed for refractors with less-than-perfect colour correction, where the tighter spectral window suppresses the bluish halos around stars that a wider luminance filter would show. 1.25" M28.5 mount.