Bahtinov mask (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Bahtinov mask" in English language version.

refsWebsite

Global rank English rank

low place

low place

1books.google.com

3^rd place

3^rd place

astronomy.ru (Global: low place; English: low place)

Pavel Bahtinov (22 September 2005). "Optional Focusing Mask". Retrieved 17 July 2017.

books.google.com (Global: 3^rd place; English: 3^rd place)

Harris, Lawrence (2010). So You Want a Meade LX Telescope!: How to Select and Use the LX200 and Other High-End Models. Springer Science & Business Media. ISBN 978-1-4419-1775-1.