Bahtinov Mask Focusing Mask Aluminum Alloy Bahtinov Mask For Telescopes

DescriptionFocusing masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task. The best focus for your telescope quickly and easily. Suitable for use on all types of telescope, reflectors, refractors.Features- Color: Black.- Size: 9.50X9.50X0.10cm/3.73X3.73X0.04in- Material: Aluminum alloy.- Focusing mask is to help you focus quickly. It can help you achieve a perfect focus webcam in seconds.- Focusing mask with 3 fixing screws; they have a scratch-resistant silicone sleeve to protect your precious telescope surface from scratches.- Focusing mask is made of metal. It is very lightweight and will not become a burden to maintain the balance of the telescope- With 3 holes. The mask can be easily connected to any telescope by 3 screws.- It is manufactured with technology to ensure the of the product and can work for a long time.Packing list: 1 x Focusing Mask