Antlia ALP-T Dual Band 5nm Ha+OIII Golden Filter, 2" Size

The Antlia ALP-T 5 nm 2" filter is a top-tier astrophotographic filter designed specifically to capture stunning images of the cosmos. It transmits the Hα (656.3 nm) and OIII (500.7 nm) bands, making it a versatile tool for photographers. Whether you're using a DSLR camera, a color camera, or a monochrome camera, this filter will undoubtedly accelerate your signal acquisition process by enabling simultaneous exposure to two of the three basic spectral lines.

One of the remarkable features of this filter is its incredibly narrow half-width of transmission bands, measuring just 5 nm. Combined with the filter's complete separation of the Hα and OIII bands, this narrow bandpass ensures a high signal-to-noise ratio, resulting in a significant improvement in image sharpness and contrast. Additionally, the Antlia ALP-T 5 nm 2" filter boasts exceptional optical efficiency for the transmitted bands and high optical density for the blocked range. As a result, it effectively eliminates the negative effects of light pollution, enabling astrophotographers to capture breathtaking pictures even in close proximity to large cities.

Important: Please note that the Antlia ALP-T 5 nm 2" filter is not recommended for visual observations, and it should never be used for observing the Sun!

Key Features of the Antlia ALP-T 5 nm 2" Dual-Range Filter:

High Transmittance: This filter ensures high transmittance for the Hα and OIII bands while efficiently blocking other spectral lines, guaranteeing accurate and vibrant astrophotography.

Compatibility: The Antlia ALP-T 5 nm 2" filter is designed to work seamlessly with various cameras, including digital SLRs, monochrome cameras, and color astronomical cameras, providing flexibility and convenience for photographers.

Astrograph Compatibility: Specifically tailored to cooperate with astrographs with a maximum light value of f/3.6 or darker, ensuring optimal performance and compatibility with your existing equipment.

Light Pollution Resistance: This filter is specially designed to function flawlessly in environments with strong light pollution, allowing astrophotographers to capture awe-inspiring images without interference.

Technical Specifications:

• Filter Type: Dual-range filter
• Filter Diameter: 2"
• Filter Thickness: 2 ± 0.05
• Filter Shape: Round
• Transmitted Bands: Hα, OIII
• CWL (Hα Band): 656.3 nm
• Half Bandwidth (FWHM) (Hα Band): 5 nm
• Maximum Transmission (Hα Band): 90%
• CWL (OIII Band): 500.7 nm
• Half Bandwidth (FWHM) (OIII Band): 5 nm
• Maximum Transmission (OIII Band): > 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)
• Frame Finish: Black, anodized
• Thread: M48x0.75

Included in the Set:

• Antlia ALP-T 5 nm 2" Dual-Range Filter

Guarantee:

The Antlia ALP-T 5 nm 2" filter is backed by a 36-month guarantee, ensuring your satisfaction and peace of mind.

Upgrade your astrophotography game with the Antlia ALP-T 5 nm 2" Astrophotographic Filter, and unlock a new level of image quality and clarity. Capture breathtaking cosmic wonders while effectively combating light pollution. Explore the universe with confidence and precision, and let your creativity soar.