Telescope Filters

Telescope filters selectively block and transmit portions of the visual spectrum and by using them you will appreciate the enormous difference in the level of detail you can actually see in astronomical objects.

Filters are without doubt an invaluable aid in both lunar and planetary observation as they reduce glare and light scattering. They increase contrast through selective filtration, increase definition and resolution, reduce irradiation and lessen eye fatigue.

Of course, how effective the filter is will depend on a number of factors, most notably: the aperture and focal length of the telescope, the magnification being used, and the viewing conditions.

Moon Filters

Using a Moon Filter will cut down glare and bring out much more surface detail, give you better contrast, and make for more comfortable viewing.

Planetary Filters

Astronomical telescope filters work by blocking out certain colors in the visible spectrum of light. A red filter, for example, will block out all but the red wavelength of light.

Coloured filters, typically red, green, blue and yellow are good for observing the planets. By swapping the filters the different colours will bring out different details in the planets such as in Jupiter's cloud belts.

If you take a look at an object that is primarily red while using a red filter, the object will appear very bright. Areas which are not red will appear more clearly because they contrast with the wavelength of light which is being passed by the filter

Light Pollution Reduction Filters are designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light. This includes mercury and both high and low pressure sodium vapor lights.

In addition, they block unwanted natural light caused by neutral oxygen emission in our atmosphere. As a result, these filters darken the background sky, making deep-sky observation and photography of nebulae, star clusters and galaxies possible from urban areas, (not suitable for lunar, planetary or terrestrial photography).

Solar Filters

Then there are Solar Filters for observing the Sun. The purpose of a solar filter is to enable you to look directly through the telescope at the Sun. The filter has to eliminate infra-red radiation emitted by the Sun and reduce the amount of visible light to an acceptable level.

Solar filters come in many different types and should be used with extreme caution, making a mistake here could result in permanent eye damage. Ensure you get all the information you can before proceeding to use one.

Change Filters Quickly and Safely Without Interrupting Observing or Photography

There's also an easy way to change the filter you want for observing or photography.With a 5-Filter wheel, it is possible to change filters without having to remove your eyepiece or camera.

All you do is rotate the wheel and your filter securely clicks into place, ready for you to use. You don't even need to leave the eyepiece.

Eyepiece And Filter Kit

Buying filters and eyepieces separately can be both time-consuming and expensive, when what you really want to be doing is viewing.

Zhumell offer an 1.25" Eyepiece and Filter Kit which includes all you require if you're just starting out or even if your adding to your collection.

Baader Filter amongst the most effective and economical tools for the amateur astronomer.

Celestron Filters
Telescope eyepiece filters are an invaluable aid in lunar and planetary observing

Celestron Moon Filter
This filter is well suited for practically any aperture telescope making viewing the Moon far easier on the eye.

Orion Moon Filter
This Filter is especially useful to owners of large-aperture scopes, in which the Moon's brightness can be overwhelming.

Lumicon Filters
Telescope Filters for light polluted skies, planets, deep sky objects, galaxies, nebulae, planetary nebulae, comets, and solar prominences.

Meade 4000 Filters
For visual applications Series 4000 filters thread into the barrels of all Meade 1.25" eyepieces, and into the barrels of virtually all other 1.25" eyepiece brands as well.

Skywatcher Filters
The most recent Lunar Planetary filter set will enable you to get the finest possible view that you can from your telescope.

Solar Filters
When you begin to observe the wonders of our Sun you will be hooked by the amazing sometimes spectacular sights that continue grace our sky.

Meade SolarMax Filters
Coronado filters are used around the world by serious solar enthusiasts and professional research facilities alike.

Zhumell Filter Set
Now you can bring the cosmos in for a close-up with the intense, high performance Zhumell Lunar Planetary Filter Set.

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