ZWO Filter Set H-alpha, SII, and OIII 1.25 inch: narrowband imaging with maximum nebula detail
This narrowband filter set is your gateway to serious narrowband astrophotography with a monochrome camera. Each filter isolates a specific emission line with a bandwidth of just 7 nm, making faint nebula structures visible with high contrast and virtually eliminating light pollution. This allows you to capture detailed nebulae, even in the middle of the city or under moonlight.
What each filter does
- H-alpha (656 nm): hydrogen nebulae and HII regions, the richest signal in the night sky
- OIII (501 nm): Planetary Nebulae and Supernova Remnants
- SII (672 nm): Z-wave emission in deep nebulae
Together, the three channels form the classic Hubble Palette (SHO), the color combination used to create the most famous nebulae photos. Each channel is exposed separately and then combined in editing software to form a color image.
Compatibility
The filters fit all 1.25-inch filter wheels, such as the ZWO EFW 8×1.25-inch. They are homophotic with the ZWO LRGB filters, so switching between them can be done without having to refocus. Optimal in combination with monochrome cameras such as the ASI183MM or ASI294MM Mono.
Specifications
| Filter type | small band filter set (H-alpha, SII, OIII) |
| Format | 1.25 inches (31.7 mm) |
| Half-value width | 7 nm per filter |
| Transmission | more than 80% |
| Housing | aluminum |
| Use | photographic, with a single camera |
The complete narrowband set from the filter series ZWO. Combine with a ZWO EFW filter wheel and a mono camera for a fully automatic SHO workflow.
Reviews
There are no reviews yet.