ATIK 2″ Narrowband filter Set


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SKU: ATK0205


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The ATIK Narrowband Set 2″ filters comprises of Hydrogen-Alpha (Ha), Sulphur (SII) and Oxygen (OIII).

  • Ha 656.3nm
  • SII 671.6nm
  • OIII 500.7nm

The Atik 2″ narrowband filter set 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). Take advantage of our 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 2″ narrowband 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:  2” mounted
Transmitted Wavefront RMS: λ/4
Parallelism(arcsec): 30s

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%




SKU: ATK0205

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