Last Chance Chroma Sii 3nm Narrowband Filter For Fast Telescopes - 50mm Square Instant 55% Discount [FYVOCeK2]

Chroma SII 3nm Narrowband Filter for Fast Telescopes

Introducing the Chroma SII 3nm Narrowband Filter, designed specifically for fast telescopes and optimized for precision astronomy. This advanced filter delivers a narrow wavelength acceptance of 3nm for SII, ensuring maximum sensitivity and detail in your observations. Whether you are an amateur astronomer or a professional, this filter is an essential tool for enhancing your stargazing experience.

Optimized for Fast Focal Ratios

One of the standout features of the Chroma SII 3nm Narrowband Filter is its optimization for fast focal ratios. While typical interference coatings may shift to the blue, compromising transmission, Chroma has engineered this filter to move the center wavelength slightly into the red. This adjustment ensures maximum transmission at the nominal wavelength, making it ideal for F/3 beams and beyond. For even faster beams, we recommend using 5nm-wide or wider bands, but this filter excels in the F/3 to F/5 range.

Practical Applications and Benefits

The Chroma SII 3nm Narrowband Filter is built to fit fast telescopes and 50x50mm equipment, making it versatile for a wide range of setups. Its precision design allows for detailed observations of SII emission lines, which are crucial for understanding celestial objects such as diffuse nebulae. With the included complimentary TPO Filter Case (OS-CF2), your filter stays secure and protected during transportation and storage. The Chroma SII 3nm Narrowband Filter is a must-have for anyone looking to push the boundaries of what their fast telescope can achieve.

• Made in America for high-quality standards.
• Complimentary TPO Filter Case (OS-CF2) included for added protection.