Introducing the SVBONY SV183 IR PASS Filter, a high-quality optical accessory designed for enhanced astronomical observations. This 2-inch filter with a wavelength of 685nm is a valuable tool for astrophotographers and astronomy enthusiasts.   The SV183 filter is specifically engineered to block visible light and only allow infrared (IR) light to pass through. This helps to reduce the effects of light pollution and enhance the visibility of faint celestial objects. By filtering out unwanted wavelengths, it allows you to capture clearer and more detailed images of the night sky.   With its 2-inch diameter, the SV183 filter is compatible with a wide range of telescopes and imaging systems. It can be easily attached to your equipment, providing a seamless integration into your astrophotography setup.   The 685nm wavelength of this filter is carefully selected to optimize the transmission of infrared light while minimizing the impact of other wavelengths. This helps to improve contrast and bring out the details of astronomical objects such as nebulae, galaxies, and star clusters.   The SVBONY SV183 IR PASS Filter is made from high-quality optical materials to ensure excellent light transmission and durability. It is designed to withstand the rigors of regular use and provide long-lasting performance.   Whether you're a professional astrophotographer or a hobbyist looking to enhance your astronomical images, the SVBONY SV183 2-Inch 685nm IR PASS Filter - W9142B is a must-have accessory. Upgrade your astrophotography setup and unlock the hidden beauty of the universe with this exceptional filter.