Filters

Lumicon's Night Sky Hydrogen-Alpha Filters are long-pass filters with a 50% transition from blocking to passing at about 640nm.

Lumicon's Night Sky Hydrogen-Alpha Filters are long-pass filters with a 50% transition from blocking to passing at about 640nm.

The best all-purpose nebula filter on the market today, the Lumicon Cassegrain Deep Sky Filter blocks all high & low-pressure mercury and sodium vapor lamp light

The legendary Lumicon Cassegrain OIII narrow band-pass filter threads onto your telescope's SCT rear-cell, and presents male SCT threads for accessory attachment.

Lumicon Dust Seals keep dust, moisture and insects out of your telescope.

Lumicon Dust Seals keep dust, moisture and insects out of your telescope. The glass is a plane-parallel polished surface

Lumicon Dust Seals keep dust, moisture and insects out of your telescope.

The LF5030, Expansion Kit for 1.25in Multiple Filter Selector, includes an extra filter tray, an 8-32 ball plunger, and two (2) adjustable stops.

The LF5032, Expansion Kit for 2" Multiple Filter Selector, includes an extra filter tray, an 8-32 ball plunger, and two (2) adjustable stops

Each filter is individually precision ground and highly polished with ultra-high light transmittance coatings on both sides for ultimate contrast on lunar and planetary detail

Each filter is individually precision ground and highly polished with ultra-high light transmittance coatings on both sides for ultimate contrast on lunar and planetary detail.

Each filter is individually precision ground and highly polished with ultra-high light transmittance coatings on both sides

Each filter is individually precision ground and highly polished with ultra-high light transmittance coatings on both sides for ultimate contrast on lunar and planetary detail.

Each filter is individually precision ground and highly polished with ultra-high light transmittance coatings on both sides for ultimate contrast on lunar and planetary detail.