Description
The SHO narrow band filter set is compatible with our filter wheels and allows astrophotographers to capture deep-sky objects in spectacular narrow band. This filter set is commonly used to image objects in the Hubble pallet.
Bandwidth:
- SII 7nm
- Ha 7nm
- OIII 7nm
Peak Transmission: minimum 80%
CWL (centre of wavelength):
- Ha 656.3nm
- SII 671.6nm
- OIII 500.7nm
Size: 1.25” mounted, 36mm unmounted or 2” mounted
Transmitted Wavefront RMS: λ/4
Parallelism(arcsec): 30s
Specifications
Filter | Peak Transmission | Half Width | Transmission in Band | Transmission out of Band |
Hydrogen Alpha | 656.3nm | 7nm | >80% | Maximum<0.3% Average 0.1% |
Oxygen III | 500.7nm | 7nm | >80% | Maximum<0.3% Average 0.1% |
Sulphur II | 671.6nm | 7nm | >80% | Maximum<0.3% Average 0.1% |
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