Optolong Filters L-Synergy 2" (87711)

Optolong Filters L-Synergy 2" (87711)

The L-Synergy is a dual 7 nm narrowband filter designed for use with DSLR cameras, color CMOS sensors, and CCD cameras. It is compatible with telescope systems that have an f-ratio of f/3.3 or slower.

Its main advantage is that it allows astrophotography enthusiasts to capture highly detailed images of emission nebulae, even in areas affected by significant light pollution. After years of technical development, the filter has been refined to reduce bright star halos while isolating key emission lines, excluding SII and OIII, to achieve maximum effective transmission.

Key Specifications

• Central wavelengths: 500.7 nm and 672.4 nm

• Bandwidth (half-value width): 7 nm

• Transmission: Greater than 85%

• Filter thickness: 1.85 mm

• Surface accuracy: 1/4 wavelength

• Frame size: 2 inch

• Mount material: Aluminium

• Optical coating: Multiple layers

• Filter type: Line filter

Application and Usage

• Suitable for astrophotography: Yes

• Suitable for visual observation: Yes

• Recommended for nebulae and galaxies: Yes

• Suitable for twin stars: No

• Suitable for Moon and planets: No