Antlia ALP-T Dual Band 5nm Ha+OIII Golden Filter, Size: 36 mm

The Antlia ALP-T 5 nm 36 mm is a cutting-edge professional astrophotographic filter designed to enhance your celestial imaging experience. This remarkable filter effectively transmits the Hα (656.3 nm) and OIII (500.7 nm) bands, offering exceptional performance and versatility. Whether you're using a reflex camera (DSLR), a color camera, or a monochrome camera, the Antlia ALP-T filter delivers outstanding results. In the case of monochrome cameras, it even enables the simultaneous exposure of the sensor to two out of the three fundamental spectral lines, accelerating the signal acquisition process.

One of the standout features of this filter is its incredibly narrow half-width of the transmission bands, measuring only 5 nm. This, combined with the complete separation of the Hα and OIII bands, results in a remarkable signal-to-noise ratio. Ultimately, this translates into a noticeable improvement in sharpness and contrast in your astrophotography. The Antlia ALP-T filter boasts high optical efficiency for the transmitted bands while also offering a high optical density for the blocked range. This exceptional feature effectively eliminates the negative influence of light pollution, allowing you to capture breathtaking images even in proximity to large cities.

Please note that the Antlia ALP-T 5 nm 36 mm filter is not recommended for visual observations. Under no circumstances should it be used to observe the Sun. Safety precautions must always be followed.

Key Features of the Antlia ALP-T 5 nm 36 mm Dual-Range Filter:

High Transmittance: The filter provides high transmittance for the Hα and OIII bands while efficiently blocking other spectral lines.

Compatibility: Designed to work seamlessly with digital SLR cameras, as well as monochrome and color astronomical cameras, ensuring versatility in your astrophotography setup.

Astrograph Compatibility: Tailored for use with astrographs with a maximum light speed of f/3.6 or darker, ensuring optimal performance.

Light Pollution Resistance: Specifically designed to excel in environments with strong light pollution, allowing you to capture stunning astrophotos even in challenging conditions.

Technical Specifications:

• Filter Type: Dual-Range Filter

• Filter Diameter: 36 mm

• Filter Thickness: 2 ± 0.05 mm

• Filter Shape: Round

• Transmitted Bands: Hα, OIII

• CWL (Central Wavelength) for Hα Band: 656.3 nm

• Half Bandwidth (FWHM): 5 nm

• Maximum Transmission: 90%

• CWL for OIII Band: 500.7 nm

• Half Bandwidth (FWHM): 5 nm

• Maximum Transmission: >82%

• Blocked Bands: Mercury Lamps (435.8 nm, 546.1 nm, 577 nm, 578.1 nm), Sodium Lamps (598 nm, 589.6 nm, 615.4 nm, 616.1 nm)

• Near Infrared Blocking: Up to 1100 nm

• Equivalent Optical Density for Blocked Lines: >OD4.5 (300 - 1100 nm)

Included in the Set:

• Antlia ALP-T 5 nm 36 mm Dual-Range Filter

Warranty:

Enjoy peace of mind with a 36-month guarantee on the Antlia ALP-T 5 nm 36 mm filter. Experience the next level of astrophotography with this exceptional filter designed to elevate your celestial imaging endeavors.