Filters for Moon, Planets, Deep-Sky and Astrophotography
The right filter for every observing session
A suitable filter can make a clear difference at the eyepiece or in an astrophotography setup. It can reduce distracting background light, bring out certain structures or make the bright Moon more comfortable to observe. This category includes filters for visual observing and astrophotography, together with filter wheels and filter drawers for changing filters quickly.
Filters for the Moon and planets
Colour filters and neutral-density filters can reduce the brightness of the Moon or help to make subtle planetary details easier to see. A variable polarising filter can be adjusted continuously and is useful when the brightness changes during an observing session. UV/IR-cut filters are particularly useful for planetary imaging because they limit unwanted wavelengths and can contribute to a cleaner image.
Nebula and narrowband filters
UHC and O-III filters are valuable tools for observing many emission nebulae. They suppress part of the artificial skyglow and stray light while transmitting characteristic emission lines from the nebula. As a result, nebulae can appear darker but more structured and contrasty. The best choice depends on the telescope aperture, focal ratio and observing location.
Filters for astrophotography
For imaging, the range includes LRGB filter sets as well as narrowband filters for H-alpha, O-III and S-II. These filters allow separate colour or emission channels to be captured and combined later into a detailed image. Depending on the camera, target and location, UV/IR-cut filters and light-pollution filters can also be useful.
Filter wheel or filter drawer?
A filter wheel holds several filters and lets you change between them by simply turning the wheel. This is especially convenient for astrophotography when several filters are needed during an imaging session. A filter drawer is more compact and allows a mounted filter to be inserted or removed without taking the camera or eyepiece off the telescope. Both solutions save time and reduce the risk of dust or moisture entering the optical setup.
What to consider before buying
Check the required size – usually 1.25 or 2 inches – as well as the available filter thread and installation space. For cameras, the connection standard, optical length and working distance are also important. A filter intended for visual observing is not automatically suitable for every camera. If you are unsure, we will be happy to help you choose a filter, filter wheel or filter drawer that matches your telescope and camera.
