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

Antlia ALP-T 5nm Dual Band 36mm Ha+OIII Golden Filter for Astrophotography

Enhance your celestial imaging with the Antlia ALP-T 5nm Dual Band 36mm Ha+OIII Golden Filter. This advanced astrophotographic filter is specifically engineered to significantly improve your astrophotography results. By effectively transmitting the Hα (656.3 nm) and OIII (500.7 nm) bands, this filter provides unparalleled performance and adaptability, whether you're using a DSLR, a color camera, or a monochrome camera. For monochrome cameras, it even allows simultaneous exposure to two of the three fundamental spectral lines, speeding up the signal acquisition process.

The filter features an impressively narrow half-width transmission band of just 5 nm, which, coupled with the distinct separation of the Hα and OIII bands, ensures an outstanding signal-to-noise ratio. This translates to enhanced sharpness and contrast in your astrophotography, making your images stand out. The Antlia ALP-T filter offers high optical efficiency for transmitted bands and a high optical density for blocked ranges, effectively countering the negative effects of light pollution and enabling stunning captures even near urban areas.

Important Safety Note: This filter is not suitable for visual observations, especially solar observation. Always adhere to safety precautions.

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

• High Transmittance: Efficiently transmits Hα and OIII bands while blocking other spectral lines.
• Compatibility: Works seamlessly with digital SLR cameras, monochrome, and color astronomical cameras.
• Astrograph Compatibility: Optimized for use with astrographs with a maximum light speed of f/3.6 or darker.
• Light Pollution Resistance: Designed to perform exceptionally well in environments with significant light pollution.

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 5nm 36mm Dual-Range Filter

Warranty:

Enjoy the assurance of a 36-month warranty with the Antlia ALP-T 5nm 36mm filter. Elevate your astrophotography to the next level with this remarkable filter designed to enhance your celestial imaging pursuits.