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Visual Filters (Orion USA, OVL and Celestron)

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OVL Light Pollution Filters

OVL Light Pollution FiltersFrom:  £22.00

These contrast-enhancing filters are designed to block out the wavelengths of light emitted by mercury-vapour light and other common causes of light pollution. 

OVL O-III Narrowband Filters

OVL O-III Narrowband FiltersFrom:  £48.00

The O-III narrowband filter is specially designed for the observation of gas and  planetary nebulae.

OVL UHC (Ultra High Contrast) Filters

OVL UHC (Ultra High Contrast) FiltersFrom:  £48.00

The narrowband UHC filter isolates the two doubly ionized oxygen lines (496 and 501nm) and hydrogen-beta line (486nm).

OVL Variable Polarising Filters

OVL Variable Polarising FiltersFrom:  £26.00

Progressively dims the view when observing the Moon or bright planets whilst increasing contrast, reducing glare and increasing the amount of detail to study. 

Orion USA 1.25'' Variable Polarizing Filter

Orion USA 1.25" Variable Polarizing Filter£39.99

The Orion Variable Polarizing eyepiece filter acts like a dimmer switch for your telescope, to tone down brightness and accentuate contrast of bright celestial objects.

Celestron 1.25'' Moon Filter

Celestron 1.25" Moon Filter£16.00   £15.00

Reduce glare and increase contrast of the Moon

Orion USA Moon Filters, 13%, 2''

Orion USA Moon Filters, 13%, 2"£29.99

Helps reduce the bright glare of the Moon so you can see more lunar detail and surface features with your telescope.

OVL Clear Sky Filter (1.25'')

OVL Clear Sky Filter (1.25")£44.99

Blocks night glow and airglow, sodium and mercury emissions (but not UV or IV). 


OVL UV/IR CUTOFF FILTER (1.25")£43.99   £42.00

This UV/IR cut filter blocks UV and IR rays to maintain the colour temperature you want, eliminating false colour fringes around bright stars.

Orion UltraBlock NarrowBand Filter

Orion UltraBlock NarrowBand FilterFrom:  £99.99

Blocks all forms of light pollution while passing critical hydrogen-beta and ionized oxygen wavelengths of light.

Orion USA SkyGlow Broadband Eyepiece SCT Filter

Orion USA SkyGlow Broadband Eyepiece SCT Filter£129.00   £99.00

SkyGlow improves the views of nebulas, galaxies and star clusters, especially when viewing in areas with light pollution from streetlights and sources

OVL H-Beta Filters

OVL H-Beta FiltersFrom:  £29.99

This high performance CCD filter transmits only the Hydogen Beta emission line, and therefore is useful for greatly increasing the contrast of objects that glow in the corresponding region of the spectrum, for example the Horsehead, Cocoon and California nebulae.

Celestron Planetary Filter Set - 1.25''

Celestron Planetary Filter Set - 1.25"£49.99

Colored filters can be used to bring out details on a planet’s surface or its cloud structure.

OVL 1.25'' Lunar/Planetary Filter Set

OVL 1.25" Lunar/Planetary Filter Set£36.99   £35.00

Comprises 4 x high quality glass colour filters.  

Celestron 1.25″ Moon Filter Set

Celestron 1.25″ Moon Filter Set£44.99

Celestron Variable Polarizing Filter

Celestron Variable Polarizing Filter£34.99

Neutral Density Moon Filter 13% 1.25''

Neutral Density Moon Filter 13% 1.25"£19.00

Sky-Watcher 5-Position Manual Filter Wheel

Sky-Watcher 5-Position Manual Filter Wheel£69.99   £65.00

This handy, time-saving device is a must-have for astronomers, for both visual and photographic use.


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