The Antlia ALP-T Dual Band 5nm Ha&OIII Filter is expertly crafted for astrophotographers using one-shot color (OSC) cameras, including DSLRs and astronomical OSC cameras, and also serves as an efficient narrowband filter for monochrome cameras. This filter stands out for its ability to isolate specific light wavelengths, significantly enhancing the quality of nebulae images.

Key Features:

• Dual Line-Pass Filter: Designed for optimal use with OSC cameras, also suitable for monochrome cameras to save time.
• Ha and OIII Isolation: Targets red Ha and blue-green OIII lines from emission nebulae, ensuring precise wavelength capture.
• Advanced Coatings: Features multi-coatings that suppress over 99.99% of unwanted light (OD4.5) from light pollution, moonlight, and airglow.
• Improved Image Quality: Delivers a superior signal-to-noise ratio and enhanced contrast in astrophotography images.
• Simultaneous Band Capture: Efficiently captures both main emission nebulae bands concurrently, while reducing light pollution interference.
• Post-Processing Ease: Minimizes effort required in post-processing to distinguish faint details from background light pollution.
• Versatile Compatibility: Ideal for a range of astrophotography cameras and setups, broadening its application scope.

The Antlia ALP-T Dual Band 5nm Ha&OIII Filter is a pivotal tool for astrophotographers looking to elevate the clarity and contrast of their celestial images, particularly when capturing nebulae and other emission objects under varied lighting conditions.

Sii/Hb Filters

he Antlia Filters ALP-T Dual Band 5nm SII&Hb is a state-of-the-art filter designed for astrophotographers using one-shot color (OSC) cameras. It uniquely passes the SII and H-Beta lines, enhancing contrast and revealing hidden details in nebulae. This filter is an excellent addition to the ALP-T Ha&OIII filter, allowing for advanced false-color and narrow-band imaging techniques. By capturing data from four spectral channels (Ha, OIII, SII, Hb), it opens up a new realm of creativity in astrophotography, enabling the creation of various false-color palettes and enhancing traditional RGB images. The ALP-T SII&Hb filter's design focuses on capturing overlooked H-Beta emissions, revealing structures beyond the reach of Ha, SII, and OIII filters. Combined with the Ha&OIII filter, it provides a comprehensive solution for OSC cameras, delivering superior signal-to-noise ratios and contrast.

Q&A Section:

• Why SII&Hb Bands?: To unveil nebulae features not visible with Ha, SII, or OIII alone.
• Benefits Over SII&OIII: Captures H-Beta lines for improved nebulae contrast and structure separation.
• Technology: Features Ion Gun Assisted Deposition coating on a double-sided polished substrate for consistent performance.
• Application Range: Ideal from Bortle scale 1 to 8; blocks NIR up to 1100nm.
• Filter Ring: 2-inch (M48*0.75) with an ultra-thin cell to minimize vignetting.
• Usage Advice: Recommended alongside the ALP-T Ha&OIII filter for enhanced imaging results.

This filter is not suitable for solar imaging or visual observation and should never be used to observe the sun directly. The ALP-T Dual Band 5nm SII&Hb filter represents a significant advancement in OSC astrophotography, offering unparalleled opportunities for both amateur and professional astronomers to explore the universe in vivid detail.

High_Speed Filters

Antlia Filters ALP-T Dual Band Narrowband Filters: Enhanced Imaging for High-Speed Systems

The Antlia Filters ALP-T Dual Band 5nm Highspeed Filters are expertly engineered for high-speed imaging systems, particularly suitable for astrophotographers using optics between f/2.2 and f/3.6. These filters excel in enhancing nebulae contrast and minimizing halos, making them an ideal choice for advanced celestial photography.

Key Features:

• Optimized for High-Speed Optics: Specifically designed for f/2.2 to f/3.6 systems, delivering exceptional contrast in nebulae imaging.
• Ideal for Fast Optics: Best performance achieved with optics faster than f/2.2.
• Standard vs. Highspeed Versions: Standard version recommended for optics slower than f/3.6; highspeed version excels with faster optics.
• Transmission Shift Consideration: Slight blue shift with optics faster than f/2, with a minimal reduction in transmission rates.
• High Performance: Despite transmission shift, maintains high effectiveness in emission nebula contrast and halo reduction.
• Consistent Quality: Each filter inspected and measured individually for reliability and consistency.
• Dual Line-Pass Design: Ideal for one-shot color (OSC) cameras and monochrome cameras, saving imaging time.
• Advanced Coatings: Effectively isolate Ha and OIII lines while suppressing light pollution and airglow.
• Superior Signal-to-Noise Ratio: Creates better contrast and clarity in images.

Usage and Safety:

• Not Recommended: For solar imaging or night visual observation.
• Strict Warning: Never look at the sun with this filter; serious eye damage may occur.

The Antlia ALP-T Dual Band 5nm Highspeed Filters represent a significant advancement in narrowband astrophotography, offering cleaner data capture, reduced post-processing effort, and superior imaging quality under varying light conditions.

Specifications

5nm HA/Oiii

• Camera Compatibility: Specifically engineered for DSLR, CMOS, and CCD color cameras.
• Enhanced Signal-to-Noise: Suppresses over 99.99% of unwanted light (OD4.5) for clearer images.
• Steep Bandpass Edges: Minimizes internal reflections for better image quality.
• Optimized Bandpass Design: Features a flat-top and moderate width to reduce spectrum shifts.
• Advanced Coating Technology: Utilizes Ion Gun Assisted Deposition on double-sided polished substrate for consistent and effective light pollution suppression.
• Broad Lighting Suppression: Effective from Bortle scale 1 to Bortle scale 8 environments.
• Near IR Blocking: Efficiently blocks NIR up to 1100nm.
• Specific Emissions Targeted: Hydrogen-alpha (Ha) and Oxygen III (OIII).
• Narrow Bandwidth: Both Ha and OIII have a Full Width at Half Maximum (FWHM) of 5nm.
• Central Wavelengths: Ha at 656.3nm and OIII at 500.7nm.
• High Peak Transmission: Ha with 92% and OIII with 88% transmission rates.
• Effective Blocking Range: ≥OD4.5 in the 300-1100nm range.
• Precise Filter Thickness: 2mm with a tolerance of +/-0.05mm.

5nm Sii/Hb Filters

• Sulfur-II Specifications:

  • FWHM: 5nm
  • CWL: 672.4nm
  • Peak Transmission: 90%
  • Blocking: ≥OD4.5
  • Filter Thickness: 2mm (±0.05mm)

• Hydrogen-Beta Specifications:

  • FWHM: 5nm
  • CWL: 486.1nm
  • Peak Transmission: 85%
  • Blocking: ≥OD4.5
  • Filter Thickness: 2mm (±0.05mm)

High Speed

Hydrogen-alpha Filter: