Specialty Bandpass Filters Sale starts 4/11/22

Lumicon Hydrogen-β Filter

The Lumicon Hydrogen-β Filter is also known as the Horsehead Nebula filter. This filter isolates only the hydrogen-beta line of the spectrum (486nm) in a narrow pass-band just 9nm wide, providing maximum contrast. Hydrogen-β filters aids in viewing of extremely faint nebulous objects such as the Horsehead, Cocoon and California Nebulae. In many cases, the Lumicon Hydrogen-Beta Filter is the ONLY way to view these objects. Recommended for 8″ or larger telescopes.

Lumicon 2 Inch Comet Filter

The Lumicon Comet Filter is a narrow band-pass filter (25nm), that reveals the delicate ionized tail of gaseous comets for optimal viewing. It is a narrow band-pass filter (25nm), which isolates the 501nm OIII line and both C2 lines at 511nm and 514nm. The high contrast of the filter reveals the delicate ionized tail of gaseous comets for optimal viewing. The Comet Filter also helps better distinguish gaseous comets from dusty comets, which normally show little contrast gain.