Optolong H-Alpha 3nm CCD 2" Filter
| Article number: | H-ALPHA3NM-2 |
| Availability: | In stock |
| Delivery time: | In Stock! |
- 2" mounted with filter mount
- Suitable for telescopes and lenses with focal ratios of f/3 and lower
Blackened edges to avoid internal reflections - Extremely narrow bandwidth of only 3 nm for maximum contrast
- Central wavelength 656 nm