The ColourMagic 3nm Narrowband Filter features an extremely narrow bandwidth and excellent transmittance, allowing you to capture high-contrast, low-noise deep-sky images even in areas affected by urban light pollution, atmospheric airglow, or other stray light sources.
This makes faint nebula structures and subtle stellar details—often difficult to reveal—easily visible.Furthermore, the ColourMagic filter incorporates an optimized optical design for improved halo control, ensuring higher image quality and enhancing the overall expressive power of your astrophotography.
H-alpha: This filter is suitable for photographing hydrogen nebulae from areas with light pollution, but also from places with dark skies. The contrasts between objects that glow in H-alpha light and the sky background are greatly enhanced.
Sii filters: The narrow-band filter allows light from ionised sulphur atoms at 671.7 and 673.1 nanometres to pass through. These are the lines in which many planetary nebulae, emission nebulae and supernova remnants shine.
Astrophotography: Monochromatic cameras are best for this. Ideally, you should combine shots with sii, oii and h-alpha filters. This will give you an image that shows the delicate nebula structures clearly and with high contrast.
OIII filtersonly allow light with a wavelength of 501 nanometres through. This corresponds with the spectrum lines fordouble ionised oxygen. These lines are emitted by planetary nebulae and some emission nebulae, so these objects remain visible whilst the rest is blocked out by the filter. This effect increases contrast and makes faint nebulae visible for the first time.
Astrophotography:These filters are best used with monochrome cameras. Ideally, images taken using these filters should be combined with images using H-alpha and SII filters. This creates an image which depicts faint nebulae clearly and with high-contrast.
