Astronomik H-Alpha Imaging Filter

A 12nm bandpass means the filter is highly selective, allowing only a very narrow slice of light centered at the 656nm hydrogen-alpha wavelength to pass through. This effectively blocks out light pollution and unwanted wavelengths, which significantly increases the contrast of emission nebulae in your images.

No, you will not. The filter features a parfocal design, meaning it is engineered to maintain the same focus point as other filters in the Astronomik line, saving you time and frustration during long imaging sessions.

No, this is a specific clip-in model designed exclusively for Canon EOS XL camera bodies. Please verify your specific camera model's compatibility before purchasing, as it will not fit standard EOS or mirrorless mounts.

The clip-in design sits inside the camera body, directly in front of the sensor. This allows you to use almost any lens compatible with your Canon EOS mount without needing to worry about filter thread sizes or adapters.

High light transmission is a major advantage here. Because 96% of the target light reaches your sensor, you can maintain shorter exposure times compared to lower-quality filters, which helps keep your images crisp and reduces the risk of tracking errors.

The filter is built to be moisture and scratch-resistant, making it quite durable for field use. While it is robust, you should still treat it like any high-end optical glass: use a dedicated lens cleaning solution and a microfiber cloth to gently remove dust or smudges.