Antlia ALP-T Dual Band 5nm Filter – High Performance for Astrophotography

The Antlia ALP-T Dual Band 5nm Filter is a dual line-pass filter designed for use with one-shot colour (OSC) cameras, including DSLR and astronomical cameras. It can also be used as a narrowband filter with monochrome cameras, providing enhanced signal-to-noise ratio and reducing imaging time.

Capture Ha and OIII Nebulae Simultaneously

This filter isolates the red Hydrogen-alpha (Ha) and blue-green Oxygen III (OIII) emission lines, while effectively suppressing light pollution, moonlight, and airglow. With optical density (OD)4.5 suppression, it ensures superior image contrast and cleaner data capture, perfect for astrophotography in light-polluted areas.

Advanced Coating for Superior Image Quality

The Ion Gun Assisted Deposition coating on a double-sided polished substrate ensures minimal internal reflections and flat-top bandpass performance. This helps you achieve sharper images with a clear distinction between nebulae and background light pollution, reducing post-processing effort.

Technical Specifications

• Hydrogen-alpha (Ha): FWHM 5nm, CWL 656.3nm, Peak Transmission 90%
• Oxygen III (OIII): FWHM 5nm, CWL 500.7nm, Peak Transmission 82%
• Blocking: ≥OD4.5 from 300nm to 1100nm
• Filter Thickness: 2mm +/- 0.05mm

Filter Ring Details

• Size: 2'' (M48*0.75)
• Ultra-thin filter cell: Minimizes vignetting with maximum possible clear aperture
• Finish: Black anodized finish with laser engraving for long-lasting clarity

Key Features

• Designed for OSC cameras (DSLR, CMOS, CCD) and monochrome cameras
• Suppression of artificial lighting from Bortle scale 1 to 8
• Minimizes spectrum downshifts, maximizing imaging performance
• Blocks near-IR (NIR) up to 1100nm for enhanced image quality

With the Antlia ALP-T Dual Band 5nm Filter, you can capture breathtaking nebulae images with exceptional contrast and clarity. Its superior coatings, narrow 5nm bandpass, and durable design make it an essential tool for astrophotographers battling light pollution.