🎁 -15% OFF ALL ITEMS! Code BFCM15

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3pcs Focus Fishbone Metal Focusing Mask Bahtinov Mask Astronomical Telescope Mask Focus Mask Aluminum Alloy Telescope Mask Aluminum Alloy Focusing Mask Metal Telescope Mask

3pcs Focus Fishbone Metal Focusing Mask Bahtinov Mask Astronomical Telescope Mask Focus Mask Aluminum Alloy Telescope Mask Aluminum Alloy Focusing Mask Metal Telescope Mask

by ULTECHNOVO
$39.98 - $39.98
$39.98
$39.98 - $39.98
$39.98
  • They are made from 2mm thick cut and the securing screws are capped with soft plastic so that they do not damage your telescope.
  • The masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect you valued telescope surface. This prevents slippage, whilst allowing the mask to remaining perfectly central.
  • Suitable for use on all types of telescope. They are made from precision cut enforced , which is stiff and long lasting. They will never be brittle in the cold, unlike some other masks which are made from normal plastics.
  • Bahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task.
  • Please be assured that these focusing masks will work excellently for both reflectors and refractors with whatever focal length.