Optolong L-eNhance Filter - 2"
- The convenience and cost effectiveness of this filter allows amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas.
- Isolates H-alpha, H-beta, and Oxygen iii Nebula Emission Lines
- The bandwidths are 24nm for OIII and H-beta, and 10nm for Ha
- Maximum Transmission of up to 90%