Zhumell Astronomical Telescope Color Filters are the perfect way to enhance astronomical viewing. Compatible When using 1.25 in. Zhumell Filters, make note of the visible light transmission (VLT) of the filter you would like to use. The VLT is a number which describes the overall amount of light which is allowed to pass through the filter. The lower the VLT number, the dimmer an image will appear. 1.25" Zhumell #23A LIGHT RED Filter (1.25-23A-LRED) - 25%VLT: 1.25 Inches Light Red Zhumell Filters #23-A help to make Mercury and Venus stand out from the blue sky when viewed during the day. Used in large telescopes, Light Red #23 A sharpens boundaries and increases contrast on Mars, sharpens belt contrast on Jupiter, and brings out surface detail on Saturn. 1.25" Zhumell #56 GREEN Astronomical Filter (1.25-56-GRN) - 53%VLT: 1.25-inch Zhumell Green Filter # 56 enhances frost patches, surface fogs, and polar projections on Mars, the ring systemn on Saturn, belts on Jupiter. Also Kight Green #56 works as a great general purpose filter when viewing the Moon. Package Contents:
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