Best Telescope Filters for Stargazing
The best telescope filters can dramatically improve contrast, reduce glare, and help reveal more detail in the night sky. Whether you’re observing the Moon, planets, nebulae, or galaxies, the right astronomy filter can greatly improve your viewing experience.
Most beginner telescope filters are made for standard 1.25-inch eyepieces, although some larger eyepieces and telescope accessories use 2-inch filters. Always check the size of your eyepiece or adapter before buying a filter.
✔ Moon filters • Nebula filters • Light pollution filters • Planetary filters • Solar filters • Astrophotography filters
See our recommended astronomy filters below
Top Recommended Telescope Filters
These filters cover the most useful options for beginners and improving visual astronomy, from reducing Moon glare to improving contrast on nebulae and helping with light-polluted skies.
Enhances nebula visibility and improves deep sky contrast, especially on suitable emission nebulae.
Affordable Moon filter ideal for beginner astronomers wanting more comfortable lunar views.
Reveals fainter nebula structure and improves contrast on selected deep sky objects.
Reduces lunar glare for clearer and more comfortable Moon viewing through a telescope.
Helps improve contrast when observing under urban or suburban skies.
Essential safety filter for observing the Sun safely when fitted correctly to the front of the telescope.
Enhances planetary detail and improves contrast on Jupiter, Mars and Saturn.
Reduces brightness for improved lunar observing comfort while keeping a natural view.
Improves contrast and visibility when observing from light-polluted locations.
Best Moon Filters
Moon filters are among the most useful filters for beginners. They reduce glare from the bright lunar surface and make long observing sessions more comfortable, especially around the first quarter, full Moon and last quarter phases.
Allows you to adjust brightness levels, making it useful for different lunar phases and bright planetary viewing.
A useful adjustable brightness filter for lunar observing, helping reduce glare without needing several separate filters.
Best Light Pollution and Nebula Filters
Light pollution and nebula filters can help improve contrast on certain deep sky objects, especially emission nebulae. They will not make the sky perfectly dark, but they can make selected objects stand out more clearly.
A useful ultra high contrast filter for improving views of nebulae under light-polluted or suburban skies.
A contrast and light pollution filter designed to reduce unwanted sky glow when observing or imaging deep sky objects.
An oxygen-III filter for increasing contrast on suitable nebulae such as planetary nebulae and some emission nebulae.
Best Planetary Colour Filters
Colour filters can slightly enhance contrast on planets by bringing out certain features. They are not essential for every beginner, but they can be useful once you start observing Jupiter, Mars and Saturn more carefully.
A useful starter set of coloured filters for experimenting with planetary contrast on Jupiter, Saturn and Mars.
A budget-friendly colour filter set for beginners wanting to test different planetary observing filters.
Best Solar Filters
Solar observing requires extreme care. Never look at the Sun through a telescope without a proper full-aperture solar filter fitted securely over the front of the telescope. Do not use eyepiece-only solar filters, and always inspect solar filters for damage before use.
A well-known solar film used for making safe full-aperture solar filters when fitted correctly to a telescope.
A front-mounted solar filter option for safe solar viewing, provided it fits securely and is checked carefully before use.
Best Astrophotography Filters
Astrophotography filters are designed for camera-based imaging through telescopes or compatible adapters. Some screw into 1.25-inch or 2-inch filter threads, while DSLR lens users may need clip-in filters, step rings or specialist lens-mounted filter holders.
A useful imaging filter for blocking unwanted ultraviolet and infrared light when using astronomy cameras.
A dual-band astrophotography filter for use with compatible telescope adapters, filter drawers, filter wheels or camera nosepieces. Not a direct DSLR lens filter.
Improve your astronomy setup further with our recommended telescopes, best telescope eyepieces, and essential astronomy accessories.