100mm Bahtinov Mask

100mm Bahtinov Mask
100mm Bahtinov Mask
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Availability: In stock available to ship within 24 hours.
SKU: 100025969
Part #: FM-100
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Bahtinov Mask for 100mm Optics

Overview:

The Bahtinov mask is used to focus small telescopes accurately. Although masks have long been used as focusing aids, the distinctive pattern was invented by Russian amateur astrophotographer Pavel Bahtinov.

Simply place the mask in front of the main optic of your telescope and take a picture. Look at the diffraction spike pattern and continue until the spikes are even. Using a Bahtinov mask is the easiest way to get into focus.

Notes:

  1. This 100mm mask is great for 90-105mm class telescopes
  2. Fits dew shields with an outside diameter of 109-145mm

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