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
Special Offer – Get 50% off any filter set (or both filter sets), when you buy any Atik mono camera (with the exception of the Atik GP).
The Atik narrow band filter are designed with a band pass of 7 nm to aid in capturing all a nebula’s photons while the vast majority of the broad band light pollution is stopped. The result is a much higher signal to noise revealing faint details in nebulas. The Narrow band filter set comprises of Hydrogen-Alpha (Ha), Sulphur (SII) and Oxygen (OIII).
This filter set received a 5 star rating in the BBC Sky at Night Magazine
Find a DealerFilter | 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% |
Three Narrowband Filters