The Herschel Antlia wedge, accompanied by a CaK filter 3 nm 1.25", is a professional-grade device designed for capturing high-quality photographs of the Sun. This system is specifically designed to work with refractors featuring a maximum aperture of 120 mm and a maximum light of f/5.5.

The Antlia CaK 3 nm 1.25" filter, integrated into the 1.25" nosepiece of the wedge, is a specialized bandpass filter that allows the passage of radiation emitted by ionized calcium atoms. By utilizing this filter, users can capture incredibly detailed images of sunspots, surface granulation, and various other solar structures. The filter is constructed by applying a multilayer coating on a double-polished substrate made of high-temperature-resistant optical glass. With a narrow half-width of just ±3 nm for the Ca-K line transmission (393 nm), the Antlia CaK 3 nm 1.25" filter produces images with outstanding resolution and contrast. Its exceptional optical efficiency within the transmission band is complemented by its ability to effectively block out other components of the spectrum, with optical densities reaching OD3 and OD5.

Enclosed within a CNC technology casing, the optics of the Herschel wedge incorporate a shutter mechanism that regulates the amount of light entering the camera. Additionally, the kit includes a ceramic heat dissipation module equipped with supplementary heat sinks, along with a solar disc finder.

Please note that the Herschel wedge presented here is exclusively intended for solar photography. Using it for visual observations may cause irreversible damage to your eyesight.

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

• Solar filter designed specifically for capturing images in the Ca-K spectral line, featuring a double-polished substrate with enhanced resistance to high temperatures.

• Integrated ceramic heat dissipation system, complete with extra heat sinks and a solar disc finder.

• Adjustable diaphragm for controlling the amount of light reaching the camera.

• Prism coated with a multi-layer anti-reflective coating.

Technical Specifications of the Herschel Wedge:

• Design: Herschel wedge with a 35 mm prism.

• Purpose: Astrophotography.

• Compatible Telescopes: Refractors.

• Maximum Permissible Aperture of the Telescope: 120 mm.

• Maximum Allowable Light of the Telescope: f/5.5.

• Camera Mount: M42 (T2) thread / 1.25" nose clip.

• Solar Filter: CaK 3 nm 1.25".

• Energy Dispenser: Ceramic with heat sink.

• Iris Control: Manual adjustment available.

• Filter and Prism Cover: Multi-layer anti-reflective coating.

• Sun Dial Finder: Integrated into the system.

• Housing Technology: CNC.

• Housing Finish: Matte black.

Technical Specifications of the CaK Filter 3 nm 1.25":

• Filter Type: Solar bandpass filter.

• Filter Diameter: 1.25".

• Filter Shape: Round.

• Substrate: Glass with increased temperature resistance.

• Transmitted Bands: Ca-K (393 nm).

• Peak Permeability Location (CWL): 393 nm.

• Half Bandwidth (FWHM): 3 nm.

• Equivalent Optical Density in the Range of 200 - 1200 nm: OD5.

• Blocking Efficiency in the Range of 200 - 1200 nm: 99.999%.

• Equivalent Optical Density in the Range of 1200 - 1500 nm: OD3.

• Blocking Efficiency in the Range of 1200 - 1500 nm: 99.9%.

• Frame: Anodized black.

Set Components:

• Antlia CaK Filter 3 nm 1.25".

• The Herschel Wedge.

• Filter and Camera Mount.

Guarantee:

The Herschel Antlia Wedge with CaK Filter 3 nm 1.25" comes with a 12-month guarantee.