Light Purple And Yellow Lens: The light purple lens can reduces when looking at the moon. Yellow lens can contrasting strongly with the blue features of Jupiter and Saturn, while enhancing the red and orange features, can be used to increase the contrast of lunar features. Excellent Grade Material: Made of optical glass and plastic materials, portable and durable. Easy to install and use, they help filter out unnecessary light and make you look clearer. Filters with Threaded: Compatible with any 1.25 inch telescope and can be used alone or in piles; Easy to install and use, they help filter out unnecessary light and make you look clearer. Light Green: ice caps and yellow dust storms on , also contrast with the increase in red and blue features on Jupiter and the Moon; Useful on the moon, , Jupiter, and Saturn to increase contrast without significantly reducing image brightness. Orange And Red Lens: Lens is used to improve the contrast between light and dark when observing space, can penetrate clouds, observe dust storms on , can be used to observe the Jupiter with good effect; Red lens provides strong contrast and enhanced turquoise details, useful for Jupiter, Saturn and . Increase the contrast between the bright during daytime or dusk observations.