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Original ZWO filter holder for the M42/M48 drawer. 1 pc supplied.

The Optolong Moon & Skyglow filter is designed to darken the background sky by blocking light transmission from skyglow 589nm and many street light emissions from artificial light.

Comprises 4 x high quality glass colour filters. Yellow, Red, Green & Moon/Neutral Density Filters included. These filters will fit most internally-threaded eyepiece barrels of 1.25"/31.7mm format. Supplied in attractive foam-lined plastic screw top storage case.

Spare or extra 2" filter holder for the ZWO M54 filter drawer systems.

High quality made 2" variable polarising filter. Ideal for lunar and planetary viewing. Comes as a 2 part system so you can either screw the whole filter onto an eyepiece, or screw 1 part on the eyepiece and the other on a diagonal.

Enhances contrast during planetary observation.
Also extremely Useful for solar work in conjunction with Baader Herschel Wedge Prism (#2956500V or #2956500P)

Using narrowband filters can often result in slightly dimmer images, which can be difficult to resolve to a focus. You can now use this filter to focus perfectly with a bright image and since they are also parfocal, switch to a different narrow band filter without losing the focus.

Four great Moon filters in one kit—everything you’ll ever need for optimal views of the lunar surface

The Optolong CLS (City Light Suppression) broadband filter is designed to improve the visibility of various deepsky objects by selectively reducing the transmission of wavelengths of light pollutants

The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects by selectively reducing the transmission of wavelengths of light pollutants

Baader 1.25" Neutral Density Filter with optical density ND 0.9 - Transmission 12.5% - Reduction factor 8.
For perfect energy management during Lunar and Solar observation. Suitable for solar observing only as an additional filter!

The Antares Colour Filters are made from high quality optical glass and allow for maximum contrast on viewing planetary and lunar detail. Individually precision ground, highly polished with maximum light transmission coatings on both sides.

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

The Antlia IR Pass 685nm filter is an absorption filter that allows infrared light with wavelengths of more than 685nm to pass through. It nicely complements the Antlia 850nm IR-Pass filter.

The Antlia IR Pass 850nm filter is an absorption filter that allows infrared light with wavelengths of more than 850nm to pass through. It nicely complements the Antlia 685nm IR-Pass filter.

Standing for "City Light Suppression", the Explore Scientific 1.25" CLS Nebula Filter is not just for observing nebulous objects, as it lets a broader swathe of wavelengths through to the observer than either the OIII or UHC Explore Scientific filters do.