Research on focal length determination technique of laser test system based on Talbot effect

2009 ◽  
Author(s):  
Ling-ling Wu ◽  
Li Zheng ◽  
Guo-jun Wu ◽  
Yu-ping Cang ◽  
Liang-yi Chen
Keyword(s):  
Focal Length ◽  
Test System ◽  
Talbot Effect ◽  
Length Determination

scholarly journals Near-field diffraction-based focal length determination technique

2017 ◽  
Vol 92 ◽  
pp. 105-109 ◽  
Author(s):  
Francisco Jose Torcal-Milla ◽  
Luis Miguel Sanchez-Brea
Keyword(s):  
Focal Length ◽  
Near Field ◽  
Length Determination

Focal Length Determination of Raman Immersion Ball Probes in Diverse Media

2009 ◽  
Vol 63 (3) ◽  
pp. 378-380 ◽  
Author(s):  
Henk-Jan Van Manen ◽  
Rob Bloemenkamp ◽  
Oscar F. Van Den Brink
Keyword(s):  
Focal Length ◽  
Length Determination

scholarly journals Focal length determination for the 60cm telescope at Astronomical station Vidojevica

2012 ◽  
pp. 97-104 ◽  
Author(s):  
Z. Cvetkovic ◽  
G. Damljanovic ◽  
R. Pavlovic ◽  
O. Vince ◽  
I.S. Milic ◽  
...  
Keyword(s):  
Focal Length ◽  
Ccd Camera ◽  
Angular Separation ◽  
Multiple Stars ◽  
Relative Coordinates ◽  
Double And Multiple Stars ◽  
Positional Angle ◽  
Length Determination ◽  
Optical Wavelengths ◽  
Astronomical Station

The focal length of a telescope is an important parameter in determining the angular pixel size. This parameter is used for the purpose of determining the relative coordinates (angular separation and positional angle) of double and multiple stars, and the precise coordinates of extragalactic radio sources (ERS) that are visible at optical wavelengths. At the Astronomical Station Vidojevica we have collected observations of these objects using two CCD cameras, Apogee Alta U42 and SBIG ST-10ME, attached to the 60 cm telescope. Its nominal focal length is 600 cm as given by the manufacturer. To determine the telescope focal length more precisely for both attached detectors, we used angular-separation measurements from CCD images taken at Astronomical Station Vidojevica. The obtained focal lengths are: F42 = (5989 ? 7) mm using the CCD camera Apogee Alta U42 attached to the telescope, and F10 = (5972 ? 4) mm with the CCD camera SBIG ST-10ME attached to the telescope.

Focal Length Measuring Technique Using The Talbot Effect

1987 ◽  
Author(s):  
P. Andres ◽  
J. Ojeda-Castaneda ◽  
J. C. Barreiro
Keyword(s):  
Focal Length ◽  
Measuring Technique ◽  
Talbot Effect

scholarly journals STUDY OF THE METHOD FOR FOCAL LENGTH DETERMINATION IN DIGITAL CAMERAS

2020 ◽  
Vol 4 ◽  
pp. 145-154
Author(s):  
Volodymyr Hlotov ◽  
◽  
Alla Hunina ◽  
Keyword(s):  
Focal Length ◽  
Digital Cameras ◽  
Length Determination
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