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All-Star Telescope is your source for all things astro from telescopes to astrophotography cameras. Have a question? We'd love to help. Email: info@all-startelescope.com Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844
Have a question? We'd love to help. Email: info@all-startelescope.com Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844

Starfield 180mm Focus Mask

SKU FM-180
Original price $45.00 - Original price $45.00
Original price
$45.00
$45.00 - $45.00
Current price $45.00

Shipping Available to Canada and USA from Edmonton Warehouse.
International shipping available by request. Contact Us

Usually ready in 24 hours

The Bahtinov mask is used focus sma 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.

This 180mm mask is great for 150 - 165mm class telescopes

Fits dew shields with an outside diameter of 185-210mm