Studio : Cosmo Brands Inc. Publisher : Cosmo Brands Inc. Binding : Electronics Product Description Threaded to fit standard 1.25" eyepieces and the Cassini 4 Slot Filter Wheel. Astronomical filters generally work by blocking a specific part of the color spectrum making the object more visible, 'contrasty', or defined. Filters can be used to increase contrast and enhance the details of the Moon and planets. INCLUDES THE FOLLOWING WRATTEN FILTER NUMBERS: #8 Light Yellow #11 Yellow-Green #12 Yellow #21 Orange #23A Light Red #25A Red #38A Dark Blue #47 Violet #56 Light Green #58 Green #80A Blue #82A Light Blue ND96 Neutral Density 0
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