Use the 50mm square and unmounted Alpine Astronomical Baader UBVRI CCD Photometric Imaging Filter Set to capture images in a range of wavelengths from ultraviolet, through the visible spectrum, and to the high infrared range. Imaging the same object in specific wavelengths allows you to improve contrast and reveal details otherwise undetectable so you can mat and stack them in post and produce unique custom images of planets, galaxies, nebulae, and other astronomical phenomena.
Each glass filter is precision planeoptically polished for distortion-free throughput, and dielectrically coated to maximize transmission through it. The 50x50mm square filters are offered here unmounted for custom applications and imaging rigs.