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.
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.
