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The out of band blocking specification of the new OIII Pro version is rated to OD5 (0.001%) which delivers an excellent SNR (signal to noise ratio) and effective cut-off rate to minimize interference from other wavelengths.

IDAS NBZ Filters are designed to enhance the contrast of Hα and OIII emission nebula, yet accommodate the filter spectral shift when used with modern fast optical systems. This dual-band filter is ideal for one-shot color cameras as well as mono-color astronomical cameras.

The Antlia H-Alpha (Ha) 3.0nm filter is suitable for imaging H-Alpha emissions from nebulae, planetary nebulae and supernova remnants.

The Antlia SII 3.0nm filter is suitable for imaging SII emissions from nebulae, planetary nebulae and supernova remnants.
The 3.0nm bandwidth delivers a high transmission at a center wavelength of 671.6nm

For the vast majority of us, we live in cities or locations with a lot of street lights. Light pollution in the night sky can significantly degrade contrast in astronomical images.

Bring out the best in your nebulae astroimages with the H-alpha H-beta OIII (Hα-Hβ-OIII) Imaging Filter for the 8” RASA.

The Antlia H-alpha EDGE narrowband filter optimizes the FWHM (full width half maximum) to 4.5nm bandpass. The suppression of optical density (OD 5) on unwanted wavelengths and the excellent transmittance characteristics found in the Antlia 3nm Pro.

Antlia OIII 4.5nm EDGE filters are designed to deliver 85% transmission at the 500.7nm line that provides you with the maximum signal to reveal the faintest OIII nebulae structures.

High transmittance for working with both long focal ratios and fast optical systems (as fast as f/3 or maybe even f/2.8)!

This H-alpha Filter is suitable for imaging of Hydrogen nebulas from observation sites with light pollution and from dark sites as well. The contrast between an object glowing at 656nm and the background is massively increased.

Antlia LRGB series are high quality colour filters specially designed for deep space photography of black and white cameras. Available in 1.25", 2", 31mm and 36mm formats.

The Antlia OIII 3.0nm filter is suitable for imaging Oxigen III emissions from nebulae, planetary nebulae and supernova remnants.
The 3.0nm bandwidth delivers a high transmission at a center wavelength of 500.7nm

SHO filters set is matched with astronomical monochrome CCD, DSLR(digital camera) to shoot astronomy objects with single channel. These filters set are commonly used by astrophotographers to present their photos in Hubble Pallete.

For all astrophotography enthusiasts, filters are one of the indispensable accessories to achieve perfect deep-sky imaging.

For all astrophotography enthusiasts, filters are one of the indispensable accessories to achieve perfect deep-sky imaging.

The Antlia H-Alpha (Ha) 3.0nm filter is suitable for imaging H-Alpha emissions from nebulae, planetary nebulae and supernova remnants.