The Image Acquisition System of the YNAO Multi-Function Astronomical Theodolite

Zhang Yigong; Li Binhua; Yang Lei; Cheng Xiangming

Astronomical Research and Technology > 2014 > 11(1): 72-79.

Zhang Yigong, Li Binhua, Yang Lei, Cheng Xiangming. The Image Acquisition System of the YNAO Multi-Function Astronomical Theodolite[J]. Astronomical Research and Technology, 2014, 11(1): 72-79.

Citation:

Zhang Yigong, Li Binhua, Yang Lei, Cheng Xiangming. The Image Acquisition System of the YNAO Multi-Function Astronomical Theodolite[J]. Astronomical Research and Technology, 2014, 11(1): 72-79.

Citation:

Zhang Yigong, Li Binhua, Yang Lei, Cheng Xiangming. The Image Acquisition System of the YNAO Multi-Function Astronomical Theodolite[J]. Astronomical Research and Technology, 2014, 11(1): 72-79.

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The Image Acquisition System of the YNAO Multi-Function Astronomical Theodolite

1.
College of Information Engineering and Automation, University of Science and Technology of Kunming, Kunming 650500, China
2.
Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
3.
Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Science, Kunming 650011, China

More Information

Received Date: December 28, 2012
Revised Date: January 13, 2013
Published Date: January 14, 2014

Graphical Abstract

Abstract

Abstract

A new telescope for astrometry, the YNAO Multi-Function Astronomical Theodolite, has been built in the Yunnan Observatory.Its main imaging device is a digital CCD camera without cooling.Two analog CCD cameras are used to measure telescope pointing errors in the azimuth and altitude directions, respectively.In using the telescope two sets of triggering signals are generated from the telescope control system, for controlling the digital camera and the analog-camera pair, respectively.The two image acquisition cards are separately installed in two workstations and can be operated in an external triggering mode.We describe the telescope operation mode which involves using rotation of the telescope.The observation mode can be described as two sets of exposures, which are before and after the telescope rotation, respectively.The start moments and amounts of exposures are set by external signals.The paper shows the block diagram of the entire image acquisition system and the flowchart of the software of using the system.The paper also gives the details of main programming methods of the software based on the VC++ and Sapera LT.As a demonstration of the effectiveness of the system, we provide a screenshot of the user interface of the software, some images acquired by the cameras, and an analysis of a stellar image recorded by the digital camera.
- Multi-Function Astronomical Theodolite,
- Image Acquisition System,
- Software,
- Hardware,
- Programming method

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References (13)

References

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