Different Color Filters: This telescope filter set contains five different colors of filter lenses to better meet the need to take photos that capture more details in every scene; enhance contrast and create a cinematic effect
Filter Function: Orange filters increase contrast; green filters allow for better skin shading; yellow filters create greater contrast between skies or trees and clouds; blue brings greater contrast between light and dark to black and white photos
Metal Material: The filter holder is made of metal and is extremely thin to minimize shadows and diffraction; and the internal threads on both sides of the filter also allow for the attachment of 1.25 inch eyepieces or other accessories
Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length; All you need to do is to measure your telescope tube size and choose the right size of the mask
They are made from 2 mm thick laser cut abs; Securing screws are capped with soft plastic so they do not damage your telescope; These Bahtinov masks are adjustable to fit a wide range of optical tubes; They have adjustment latitude of about 215 to 260 mm