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Astronomy > Telescope accessories > Astrophotography > Masks > Focusing Masks > Astroprints > Astroprints Focusing Mask Bahtinov Samyang 135mm F2
Product no.: 78124

Focusing Mask Bahtinov Samyang 135mm F2

$ 34.90 incl. VAT plus shipping costs
in stock
ready for shipping in 24 h + lead time
  • Find the focus with a Bahtinov mask
  • Easy to mount, lightweight plastic
  • Particularly inexpensive thanks to 3D printing

Product description

The focusing mask according to Pavel Bahtinov facilitates precise focusing, which is particularly important in astrophotography. The mask is attached to the front of the tube or lens. When looking at a star, it produces a pattern of rays. When the long ray intersects the two slightly shorter rays symmetrically in the middle, the focus is correct. Thanks to its many opening slits, the Bahtinov mask can also be used with relatively dim stars. This is an advantage over the classic Scheiner mask.

A Bahtinov mask should actually be calculated separately for each aperture ratio. However, experience shows that one mask can be used very effectively for an entire aperture range.

The item is manufactured using a 3D printing process from special PLA (polylactide). This variant of PLA plastic is UV-resistant and dimensionally stable up to 110°C.

Specifications

Capacity


Fits ...
Samyang 135mm F2

General


Material
Synthetic material

Product safety

Manufacturer: Astroprints, Freisinger Weg 27, 85375 Neufahrn, DE, https://www.astroprints.de/
Astroprints Focusing Mask Bahtinov Samyang 135mm F2
Astroprints Focusing Mask Bahtinov Samyang 135mm F2
Astroprints Focusing Mask Bahtinov Samyang 135mm F2

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