Baader Planetarium 8nm SII CCD Filter, 50x50x3mm Square Unmounted

How can you capture the most breathtaking deep sky images with unparalleled contrast and clarity The Baader Planetarium 8nm SII CCD Filter is the answer for astrophotographers seeking to elevate their work. This premium quality filter is specifically designed to enhance deep sky photography by isolating the Sulfur-II line at 672nm with an ultra-narrow 8nm bandwidth. The result is strikingly detailed images that showcase celestial wonders in H-Alpha, H-Beta, and Oxygen III wavelengths, all while achieving the shortest possible exposures.

Crafted with the astrophotography enthusiast in mind, the Baader Planetarium 8nm SII CCD Filter boasts an exceptional optical quality that maintains sharpness and contrast without any loss. The substrate of each filter is fine-optically polished to plane parallel perfection, ensuring a flawless 1/4 wavefront across the entire surface. This meticulous custom polishing distinguishes Baader filters from the standard precision-polished substrates found in other manufacturers' offerings.

The coatings on this filter are not just any coatings; they are the result of advanced ionbeam deposition technology, applied with precision in Germany. This process guarantees that the coatings are ultra-hard, durable, and impervious to degradation from normal use or cleaning. The meticulous application ensures consistent bandpass centering, high transmission rates, and robust out-of-band blocking.

Moreover, the Baader Planetarium 8nm SII CCD Filter has been engineered to eliminate the common issue of reflections that can occur with other narrowband astro-filters. The anti-reflection coatings are carefully balanced to prevent halos and are designed to avoid any physical deformation of the optically flat substrates. Each filter is individually coated, with the edges permanently sealed, ensuring that the coatings' integrity and uniformity are maintained for a lifetime.

Astrophotographers who choose the Baader Planetarium 8nm SII CCD Filter can trust in the mil-spec coatings that will not degrade, peel, or flake off. Unlike filters cut from pre-coated sheets of glass, which can leave rough and torn edges vulnerable to moisture penetration, Baader filters are built for durability and performance.

For those who demand the highest quality and reliability in their astrophotography equipment, the Baader Planetarium 8nm SII CCD Filter, with its 50x50x3mm square unmounted design, offers versatility and excellence. It's not just a filter; it's an investment in capturing the cosmos with the utmost precision and beauty.