With Levenhuk Solar Filter for 127mm MAK Telescopes you can safely observe the Sun and you don't have to worry about your eyes - this filter will protect them from harmful solar radiation. When choosing a solar filter you should mainly take into consideration your telescope's optical tube diameter and not the telescope's aperture. If the filter is to cover your telescope's front end, you should compare the filter's inner diameter to your optical tube/dew shield diameter. If the filter is to be placed inside the tube, you should look at the filter's outer diameter in comparison with the telescope tube diameter. Please measure your telescope before buying this filter and carefully compare your results with the values provided in the Specifications table. The German-made Baader Planetarium AstroSolar Visual film has a uniform structure and provides high-quality images with no distortion. It allows you to see a lot of details on the solar surface such as granulation, solar flares and the structure of the spots - all this you will be able to see with your own eyes. With this filter the Sun will be of a neutral, eye-pleasing white color. The filter may also be used with telescopes of other manufacturers with similar design and tube diameter. We recommend checking the inner and outer diameter of your telescope optical tube before purchasing the filter. Solar filter for 127mm MAK Telescopes Brand: Levenhuk Model: Solar Filter for 127mm MAK Telescopes Optical density: 5.0 Filter aperture (film diameter): 100mm Inner diameter: 146mm (5.8 inches) Weight: 1.1 pounds Dimensions: 1.9 inches long x 7.7 inches diameter This filter is suitable for the following Levenhuk telescopes: Levenhuk Strike 115 PLUS Levenhuk Strike 100 PLUS Levenhuk Strike 120 PLUS Levenhuk Skyline PRO 127 MAK Levenhuk SkyMatic 127 GT MAK Levenhuk Ra R115 ED Triplet OTA Levenhuk Ra R110 ED Doublet OTA CAUTION! Never look directly at the Sun through your telescope or finderscope without a solar filter.