Leviathan Spectral Pro 1.25" Light Pollution FilterLeviathan Spectral Pro 1. 25" Light Pollution Filter The LEVIATHAN Spectral Pro is a next generation light pollution suppression filter, designed using real world spectral data from cities across the globe. It selectively blocks actual skyglow sources while preserving the critical emission bands used in deep sky imaging. Blocks dominant LED, metal halide, and sodium light pollution bands Passes optimal emission lines, galactic spectra including dust,

25″ filter won’t have vignetting with a scope with up to f/5 focal ratio and a 31mm filter won’t have vignetting up to a f/2 lens

The optical system is multi-coated to maximise contrast and image sharpness

and other accessories with a 1

equatorial wedge and dovetail L-bracket

Lunar and Planetary Institute

Self-powering: When connected to a Celestron computerized mount

This EFW can also accept unmounted 50

Consider adding the optional tripod for even more viewing options

Any USB power source can charge the cooling fan

ClickLock compression ring made of hardened Bronze ensures lifetime non-marring operation

and DEC locks are released

easily portable equipment now get better pictures of the sky than professional observatories did half a century ago