Antlia ALP-T Dual Band 5nm Ha+OIII aka Golden Filter, 36 mm, HighSpeed version

Antlia ALP-T HS 5 nm 36 mm Dual Band Astrophotography Filter

The Antlia ALP-T HS 5 nm 36 mm Dual Band Filter is a top-tier astrophotographic filter engineered to elevate your imaging capabilities. Crafted for professional-grade performance, this filter expertly transmits Hα and OIII bands, ensuring exceptional results whether you're using DSLR cameras, color cameras, or monochrome cameras. Monochrome camera users will particularly benefit from accelerated signal acquisition, as the filter exposes the sensor to two of the primary spectral lines simultaneously.

This filter is part of the High Speed series, optimized for high light intensity astrographs. It accomplishes this by shifting the transmission band maxima towards longer wavelengths compared to standard ALT-P filters, making it ideal for use with f/2.2 - f/3.6 astrographs.

With a narrow half-width of only 5 nm for the transmission bands and complete separation of the Hα and OIII bands, this filter significantly enhances the signal-to-noise ratio. The result is sharper and more contrasted astrophotographs. Its high optical efficiency for passbands and strong optical density for blocked ranges effectively combat light pollution, allowing you to capture breathtaking images even in urban settings.

Important Note: The Antlia ALP-T 5 nm 36 mm filter is not intended for visual observation and must never be used to observe the Sun.

For in-depth details about high-speed filters, please refer to the PDF document.

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

• High transmittance for Hα and OIII bands with effective blocking of other spectral lines.
• Compatible with digital reflex cameras, monochrome, and color astronomical cameras.
• Exceptional optical performance with f/2.2 - f/3.6 astrographs.
• Performs well in areas with strong light pollution.

Technical Parameters:

• Filter Type: Dual band filter
• Filter Diameter: 36 mm
• Filter Thickness: 2 ± 0.05 mm
• Filter Shape: Round
• Pass Bands: Hα, OIII
• Center Wavelength (CWL) for Hα Band: 657.8 nm
• Half Bandwidth (FWHM): 5 nm
• Maximum Transmission: 88%
• Center Wavelength (CWL) for OIII Band: 502.2 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 1050 nm
• Optical Density Equivalent for Blocked Lines: >OD4.5 (300 - 1050 nm)

Included Components:

• Antlia ALP-T HS 5 nm 36 mm dual band filter

Guarantee:

Enjoy a 36-month guarantee on your Antlia ALP-T HS 5 nm 36 mm filter, ensuring peace of mind with your purchase.