Astromania Bahtinov Mask Focusing Mask For Telescopes - Fm60Mm For A Tube Outer Diameter (Od) From 65Mm-100Mm - Can Be Mounted With The Brass Screws Inside Or Outside The Drawtube

Suitable for use on all types of telescope; they are made from precision laser cut enforced plexiglass that is stiff and long lasting; they will never be brittle in the cold; unlike some other masks which are made from normal plastics The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect valued telescope surface; mask remains centered since 3-post mounting; while fitting a wider range of telescopes

Key Features:
• Made from 2mm thick laser cut plexiglass and securing screws are capped with soft plastic so that do not damage telescope; They have adjustment latitude of about 65-100mm that adjustable to fit optical tubes unlike masks which only fit one telescope
• Please be assured these focusing masks will work excellently for both reflectors and refractors with whatever focal length; all you need to do is to measure telescope tube size and choose right size of mask contact us if not sure where to measure

Country of Origin: USA
Manufacturer/Importer/Packed By: Astromania

Availability: Estimated Time Of Delivery Is 15-17 Days
Delivery Region: All Over India