The ZWO OIII 7nm narrowband filter is designed for nebula observation allowing 7nm bandwidth of light centered on a wavelength of 500nm, which corresponds to OIII emission lines, blocking out all other light.
The ZWO SII 7nm narrowband filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation and imaging. It is suitable for visual observation on most emission nebulae
The Baader IR-Pass filter blocks wavelengths below 685 nm. At these longer wavelengths, planetary images are less disturbed by wavefront distortions in the atmosphere (seeing).
The Astronomik ProPlanet 642 BP is the lastest addition to the family of Astromik ProPlanet IR-pass filters. The filter thrills because of it´s wide range of applications.
Baader S-II f/2 Highspeed Filter – Precision Grade 6.5 nm FWHM, recommended for extremely fast optical systems from f/3.4 to f/1.8 Specially designed for the special filter requirements when used with fast optics like the Celestron RASA astrographs
Baader O-III f/2 Highspeed Filter – Precision Grade. 6.5 nm FWHM, recommended for extremely fast optical systems from f/3.4 to f/1.8. Specially designed for the special filter requirements when used with fast optics like the Celestron RASA astrographs
Baader H-alpha f/2 Highspeed Filter – Precision Grade. 6.5 nm FWHM, recommended for extremely fast optical systems from f/3.4 to f/1.8. Specially designed for the special filter requirements when used with fast optics like the Celestron RASA astrographs
The L-Pro (L-Professional) filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings
Designed for CCD astrophotography, the set includes Luminance-IR, Red, Green, and Blue dichroic CCD filters. The filters are resistant to humidity and scratching and set into a durable aluminium alloy threaded mounting ring.
The Askar ColorMagic Duo-Band filter is a dual or triple bandpass narrowband filter designed for light polluted skies for COLOUR CAMERAS to maximise the output from your imaging time.
The H-Alpha 7nm filter is the most popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light
Narrowband filters are used to create high contrast deep sky images of certain objects, mainly emission and diffuse nebulae (i.e. Veil Nebula, M42 Orion Nebula, North America Nebula, Horsehead Nebula) or planetary nebulae (i.e. M27 Dumbbell nebula, M57 Ring Nebula, Helix Nebula), just to mention few of well known nebulosities.
The ZWO OIII 7nm narrowband filter is designed for nebula observation allowing 7nm bandwidth of light centered on a wavelength of 500nm, which corresponds to OIII emission lines, blocking out all other light.
The ZWO SII 7nm narrowband filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation and imaging. It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants
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