Svbony 1.25" or 2" or EOS-C CLS Filter Size:1.25" The Astronomik MaxFR series of

The Astronomik MaxFR series of narrowband-emission line filters is perfectly matched to the requirements of astronomical deep-sky imaging with fast optical systems

exposure time can be extended to record fainter structures

wide 50° apparent field of view

Lens edges is blackened to reduce scattering of stray light

PMR Version   DMR TierⅠ(license-free DMR)

Svbony 1.25" or 2" or EOS-C CLS Filter Size:1.25" The Astronomik MaxFR series ofProduct Description. The SVBONY city light suppression broadband filter is designed to improve the visibility of various deepsky objects at sub rural area. By selectively screening out of some of the background sky glow, the contrast is increased and allows deep sky objects to stand out against the background. It can be used not only for astronomical observations but for astronomical photography. Spectral Curve The Major Emission Lines of Nebulae: H