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 (or all) filter sets, when you buy any Atik mono camera (with the exception of the Atik GP).
To redeem the special offer on this website, simply select your filter size with the 50% off offer when adding your items to the cart. This offer is also available through any of our dealers.
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
Product code 1.25″: ATK0176 36mm: ATK0177 2″: ATK0175
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