Omegon Premium Moon filter 50% transmission 2″
The Moon is one of the most beautiful yet most demanding objects for visual observation through a telescope. During a full Moon, its brightness is so intense that without a suitable filter the eye tires quickly, and fine surface details - craters, ridges, and maria - merge into an overexposed white disc. The Omegon Premium Moon filter with 50% light transmission is an elegant and affordable solution for exactly these situations. It belongs to the Basic series, designed for everyday visual observation, and is a popular choice among both beginners and experienced observers.
How the filter works
This is a neutral density filter (ND filter) that evenly reduces the intensity of incoming light across the entire visible spectrum - it does not distort the natural color of the lunar surface. A transmission value of 50% means the filter passes exactly half of the light entering the eyepiece barrel. This value is practical for telescopes with medium apertures (approximately 60-150 mm), where a bright Moon without a filter causes uncomfortable glare and prevents the eye from adapting properly. The result is a noticeably more contrasted image with more clearly visible surface relief details, making observation a genuinely pleasant experience.
Build quality and installation
The filter frame is made of aluminum, which ensures a long service life, resistance to minor impacts, and minimal weight. The thread is the standard 2″ size, so the filter can be easily screwed directly into the eyepiece barrel of a compatible eyepiece or into the accessory tube of the telescope. Installation is immediate and requires no tools - simply screw it in and start observing.
Who is this filter for?
The Omegon Premium Moon 2″ lunar filter is ideal for anyone using a telescope with a 2″ focuser or adapter who wants to make lunar observation more comfortable. It is especially well suited for reflectors and refractors with medium apertures, but it also works with larger instruments - though for larger apertures a filter with a lower transmission value may be more appropriate. It is also an excellent first investment for newcomers who are just getting started with visual observation: the price is low and the benefit is immediately noticeable. Experienced observers will appreciate it as a backup or travel filter thanks to its compact size and robust construction.
Key specifications
| Parameter |
Value |
| Filter type |
Neutral density (ND) |
| Light transmission |
50% |
| Thread size |
2″ |
| Frame material |
Aluminum |
| Recommended aperture range |
approx. 60-150 mm |
| Intended use |
Visual lunar observation |
| Series |
Omegon Basic |
Intended use and limitations
This filter is designed exclusively for visual observation - it is not intended for astrophotography or for filtering emission objects in deep space such as nebulae or comets. Its sole and clearly defined purpose is to give you a comfortable, high-contrast, and detailed view of the Moon whenever you decide to point your telescope at the sky.
About Omegon
Omegon is an established brand with a long tradition in astronomical optics and accessories. The brand's philosophy is to offer products that genuinely work - without unnecessary compromises in build quality, yet at reasonable prices accessible to a wide range of astronomers. The Basic series delivers reliable and straightforward filters for everyday use, while Omegon's premium lines cover more demanding specialized applications. With a broad range of products - from eyepieces and filters to mounts and accessories - Omegon has equipment for every stage of your astronomical journey. The Premium Moon filter is a fine example of this approach: a simple idea, well executed, with an immediate and practical impact on your observation sessions.
