Support structure and optical alignment technology of large-aperture secondary mirror measured by back transmission method
Sign Up to like & getrecommendations! Published in 2020 at "Optik"
DOI: 10.1016/j.ijleo.2020.164274
Abstract: Abstract The diameter of secondary mirror measured by back transmission method in the on-orbit assembly space telescope validation prototype with a 1-meter aperture is Φ322 mm, and the distance between secondary mirror and mounting surface… read more here.
Keywords: mirror measured; secondary mirror; method; structure ... See more keywords
Orientation of radio-telescope secondary mirror via adaptive sliding mode control
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DOI: 10.1016/j.neucom.2016.08.116
Abstract: In this work a parallel manipulator (Stewart platform) is used to align and maintain the position of the secondary mirror of a radio-telescope. The six degrees of freedom platform gives the significant advantage of reaching… read more here.
Keywords: sliding mode; control; secondary mirror; radio telescope ... See more keywords
ADRC control of a 6-DOF parallel manipulator for telescope secondary mirror
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Instrumentation"
DOI: 10.1088/1748-0221/12/03/t03006
Abstract: In view of the special requirements of the secondary mirror control system on large aperture telescopes, an improved 6-DOF parallel manipulator is designed and used to replace the traditional hexapod used in telescope secondary mirror… read more here.
Keywords: dof parallel; control; secondary mirror; telescope secondary ... See more keywords
Cassegrain antenna with a semitransparent secondary mirror.
Sign Up to like & getrecommendations! Published in 2017 at "Applied optics"
DOI: 10.1364/ao.56.005080
Abstract: With the help of the vector theory of reflection and refraction, a novel emitting Cassegrain antenna with a semitransparent secondary mirror has been proposed and analyzed for a distant point source. Based on the absorptivity… read more here.
Keywords: secondary mirror; cassegrain antenna; semitransparent secondary; antenna semitransparent ... See more keywords
Two-mirror aerial mapping camera design with a tilted-aplanatic secondary mirror for image motion compensation.
Sign Up to like & getrecommendations! Published in 2023 at "Optics express"
DOI: 10.1364/oe.478135
Abstract: The optical compensation method is a promising method to compensate the image motion by driving the optical element of the system. However, the tilt motion of the optical element could induce the degradation of the… read more here.
Keywords: mirror; image motion; compensation; secondary mirror ... See more keywords