Antlia ALP-T Dual Band Ha&OIII 3nm
- Precise Narrowband Filtering for Exceptional Contrast
- Enhanced Transmission for Superior Signal-to-Noise Ratio
- Anti-Reflection Coating to Reduce Halo Effect
- Optimized for Fast Optics up to f/2
The Antlia ALP-T Dual Band Filter Set is a high-performance toolset designed for astrophotographers who demand precision, contrast, and exceptional image quality. This set includes the Ha&OIII 3nm Filter and the SII&Hβ 3.5nm Filter, providing unmatched narrowband imaging capability for capturing deep-sky objects with remarkable clarity and detail.
Superior imaging in challenging light conditions.
Suitable for capturing traditional RGB images or creating artistic false-color palettes.
Compatible with optics slower than f/4, with high-speed versions available for faster setups.
This dual narrowband filter isolates the H-alpha (656.3nm) and OIII (500.7nm) emission lines, optimized for use with color cameras. With a Full Width Half Maximum (FWHM) bandwidth of 3nm, it effectively blocks unwanted wavelengths, including light pollution, moonlight, and airglow. The result is an enhanced signal-to-noise ratio and strikingly detailed nebula images.
|
FWHM |
3nm |
|
Peak Transmission |
90% (H-alpha), 82% (OIII) |
|
Blocking |
≥ OD4.5 (300-1100nm) |
|
Filter Thickness |
2mm |
|
Ring Design |
Ultra-thin filter cell with M48*0.75 thread to reduce vignetting |
Ha&OIII Filter
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