SHO Narrowband Filter Set
Optolong
From ~$443.48
2 stores
In stock
The Optolong SHO-3nm filter kit includes SII 3nm, H-Alpha 3nm, and OIII 3nm narrowband filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can process Hubble images by astronomical post processing software. Compared to LRGB imaging, SHO narrowband imaging works even under full moon or severely light polluted area. Optolong filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL (central wavelength) no deviation affected by temperature change.
Specifications
| Number of Filters | 3 |
| H-Alpha Central Wavelength | 656 |
| Filter Thread | M48x0.75 |
| OIII Central Wavelength | 500 |
| Transmission | 85% |
| Filter Size | 2 in |
| Substrate | Schott glass |
| Bandwidth | 3 |
| SII Central Wavelength | 672 |
| Coating Type | Ion-assisted deposition multi-layer anti-reflection |