Your partner for astronomy
Astrophotography > Masks > Focusing Masks > Farpoint > Farpoint Bahtinov focus mask for telescopes with aperture of 89mm to 165mm
( 4 / 5 )
Product no.: 45168

Bahtinov focus mask for telescopes with aperture of 89mm to 165mm

RRP: $ 41.90 Our price:
$ 39.90 incl. VAT plus shipping costs
long-term
Product not available anymore + lead time

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.

Specifications

General


Diameter (mm)
89 - 165

Product safety

Manufacturer: Teleskop-Service Ransburg GmbH, Von-Myra-Straße 8, 85599 Parsdorf, DE, www.teleskop-express.de
Farpoint Bahtinov focus mask for telescopes with aperture of 89mm to 165mm

Customer reviews

Decent Bahtinov mask

Review by M. D. on 13.08.2018 21:13:30

( 4 / 5 )

Gives decent view of the diffraction pattern when targeting a star. It does what it is meant to do.

My only concern is the material its made from. It seems like its laser cut from a sheet of plastic and it has some flexibility to it. Which can be both good and bad. If you don't have a solid storage location it may just break on you.

Compose your own review

Do you have specific questions about your order or products? Please contact our customer service!