Narrow band Filter Set


Special offer – Get 50% off any (or all) filter sets, when you buy any Atik mono camera (with the exception of the Atik GP).

This offer is 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


50% OFF when purchased with any Atik mono camera
(with the exception of the Atik GP)
all prices excl. tax
1.25″ 36mm 2″
Product code ATK0203 ATK0204 ATK0205
RRP 543€ / $652 565€ / $679 745€ / $894


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.

  • 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

Technical Specification

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%


What's in the box?

Three Narrowband Filters

  • Sulphur - SII 7nm
  • Hydrogen-Alpha - Ha 7nm
  • Oxygen - OIII 7nm