Altair Astro 2" 6nm Dual Band Combo

Altair Ha Sii Oiii DualBand ULTRA 6nm Filter COMBO

• Ultimate Imaging Combo: This set includes two high-performance Altair Dual-Band ULTRA filters, each with a precise 6nm FWHM Bandpass, perfect for astrophotography.
• Combo Contents: The package contains the 2" DualBand 6nm Ha Oiii Filter (Code: F200DB6NM-Ha-OIII) and the 2" DualBand 6nm Sii Oiii Filter (Code: F200DB6NM-SII-OIII).
• Versatile Use: Ideal for capturing celestial objects in moonlit, light-polluted, or dark-sky conditions using a color CMOS camera, with total control over imaging channels.
• Advanced Coating Technology: Equipped with Altair V2 coatings, these filters effectively counter LED light pollution, offering deep blocking factors (OD>6 below 440nm, OD5 in visual range).
• Precision Transmission Rates: Each filter provides 93% transmission for Oiii (6nm) and Ha and Sii wavelengths (5.5nm), ensuring high-quality images with tight tolerances.
• Certified Quality Assurance: Each filter undergoes rigorous spectrographic testing with 0.1nm resolution, guaranteeing unparalleled quality and avoiding the inaccuracies of foreign filters.
• Enhanced Contrast and Suppression: The filters transmit key emission nebulae wavelengths while suppressing unwanted light, yielding exceptional contrast in challenging conditions.
• Hubble Style Imaging Potential: Combining both filters allows for double Oiii data capture, enabling true SHO Hubble style imaging with color cameras.
• Multi-Compatibility: Suitable for use with One Shot Colour (OSC) CMOS and mono cameras for luminance data.
• UVIR Blocking and Anti-Reflection Coating: Ensures high contrast and durability, suitable for both modified and un-modified DSLR cameras.
• Optimal Focal Ratios: Performs best at F4.8 or slower, but usable up to F3.6 with minimal impact on contrast.
• Standard 2" Filter Thread: Compatible with standard M48x0.75mm thread, fitting various holders and adapters.
• Filter Specifications: Both filters feature a dual-band design with specific central wavelengths and tolerances, encased in 1.85mm thick optical glass and Si02 hard overcoat.
• Frequently Asked Questions: Clarifies the functionality of OSC Narrowband filters, compatibility with cameras, and the concept of DualBand filtering.
• Product Availability Note: Due to high demand, orders may be temporarily suspended to maintain production quality. Specifications and prices subject to change.

Safety Reminder: Always follow proper guidelines and precautions when using astrophotography equipment.