All-in-one Optolong Sii Narrowband Telescope Filter - 31mm Series [nb2o4HgI]

All-in-one Optolong Sii Narrowband Telescope Filter - 31mm Series [nb2o4HgI]: Your Gateway to Deep Sky Imaging

The All-in-one Optolong Sii Narrowband Telescope Filter - 31mm Series [nb2o4HgI] is a cutting-edge tool designed for deep sky imaging enthusiasts. This exceptional filter allows for a narrow 6.5nm bandwidth of light centered on the 672nm wavelength, perfect for capturing the vibrant colors of nebulae. By reducing the transmission of artificial and unwanted natural light, the SII filter ensures that your observations are free from distractions, delivering stunning results. With this filter, you can achieve a Hubble-like look in your images, capturing the breathtaking details of celestial objects.

Technical Specifications and Advanced Features

Crafted with precision, the SII filter boasts a Schott substrate material and a 2.0mm thickness, ensuring durability and optimal performance. The surface quality meets stringent standards, with a 60/40 rating (refer to MIL-O-13830). Fine-optically polished, it guarantees an accurate 1/4 wavefront and <30 seconds parallelism over both surfaces. The SII filter offers an impressive 80% transmission, with precise off-band blocking to enhance the contrast between nebulae and the night sky. Its multi-layers anti-reflection coating and non-cementing optical substrate coating provide durability, resistance to scratching, and stability on the central wavelength, ensuring consistent performance even under varying temperatures.

Practical Applications and Benefits

The All-in-one Optolong Sii Narrowband Telescope Filter - 31mm Series [nb2o4HgI] is an invaluable asset for astrophotographers seeking to capture stunning images of deep sky objects. Its compatibility with H-alpha and OIII-CCD extra narrowband filters (SHO Set) allows for tricolor CCD astrophotography, enabling you to create vibrant and detailed color images. The filter's ability to be used in heavy light pollution, even with the moon up, ensures that your equipment remains active, producing high-quality images throughout the year. Whether you're an amateur astronomer or a professional photographer, the SII filter will enhance your imaging experience, providing you with breathtaking results and a deeper appreciation for the cosmos.