Antlia CaK 3 nm solar filter 1,25"

Antlia CaK 3 nm Solar Filter 1.25" – Specialized Bandpass Filter for Solar Imaging

The Antlia CaK 3 nm Solar Filter 1.25" is a high-performance bandpass filter specifically engineered to capture the unique radiation emitted by ionized calcium atoms. It is an essential tool for astrophotographers aiming to acquire detailed images of solar phenomena such as sunspots and surface granulation.

This sophisticated filter is crafted using a multi-layer coating applied to a double-polished substrate made from optical glass that offers high-temperature resistance. Such construction guarantees superior performance for the Ca-K spectral line at 393 nm, with a remarkably narrow half-width of just 3 nm. This ensures that images captured using the Antlia CaK 3 nm filter have exceptional optical efficiency within its transmission band, while effectively blocking other spectral components with optical densities reaching OD3 and OD5 levels.

Please note: The Antlia CaK 3 nm 1.25" filter is designed for use with ultra-sensitive astronomical cameras and is not suitable for visual observations.

Key Features of the Antlia CaK 3 nm 1.25" Filter:

• Optimized for capturing solar activity in the Ca-K spectral line.
• Constructed from double-polished glass with high-temperature resistance.
• High optical density levels at OD3 and OD5 outside the pass band.

Technical Specifications:

• Filter Type: Solar Bandpass Filter
• Filter Diameter: 1.25"
• Filter Shape: Round
• Substrate: High-temperature resistant glass
• Transmitted Bands: Ca-K (393 nm)
• Peak Permeability (CWL): 393 nm
• Half Bandwidth (FWHM): 3 nm
• Equivalent Optical Density (200 - 1200 nm): OD5
• Blocking Efficiency (200 - 1200 nm): 99.999%
• Equivalent Optical Density (1200 - 1500 nm): OD3
• Blocking Efficiency (1200 - 1500 nm): 99.9%
• Frame: Black, Anodized

Included in the Set:

• Antlia CaK Filter 3 nm 1.25"

Warranty:

This filter is backed by a 24-month guarantee, ensuring peace of mind with your purchase.