Askar Filters Colour Magic H-alpha 3nm 2" (87814)

The ColourMagic 3 nm Narrowband Filter features an extremely narrow bandwidth combined with excellent light transmission, allowing you to capture high-contrast, low-noise deep-sky images even in environments affected by urban light pollution, atmospheric airglow, or other sources of stray light.

This makes faint nebular structures and subtle stellar details, which are often difficult to reveal, clearly visible. In addition, the ColourMagic filter uses an optimized optical design for improved halo control, resulting in higher image quality and greater expressive impact in astrophotography.

H-alpha application
This filter is specifically suited for imaging hydrogen emission nebulae both from light-polluted locations and from dark-sky sites. It significantly enhances the contrast between objects emitting in H-alpha light and the background sky, allowing fine structures within nebulae to stand out clearly.

Specifications

• Quantity: 1 piece

• Central wavelength: 656.6 nm

• Half-value bandwidth: 3.7 nm

• Filter thickness: 1.85 mm

• Mount size: 2-inch

• Transmission: 85%

• Mount material: Aluminium

• Optical coating: Multi-layer

General information

• Type: Filter

• Design: Narrowband line filter

• Series: Colour Magic 3 nm

• Connection to telescope: 2-inch

Areas of application

• Suitable for photography: Yes

• Suitable for visual observation: No

• Twin stars: No

• Moon and planets: No

• Nebulae and galaxies: Yes