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Digital zenith telescope prototype of China

  • Article
  • Astronomy
  • Published:
Chinese Science Bulletin

Abstract

Classical optical astronomy measures the direction of the local plumb line on the stellar background, and is influenced by variations of the earth gravity field. Therefore, classical optical astrometry can be used to measure and study variations of plumb line. This endows classical optical astrometric technologies special significance for the interdisciplinary researches of astronomy and geoscience, and makes them irreplaceable by technologies like very long baseline interferometry, satellite laser ranging. However, classical astrometric instruments have a major drawback of low efficiency, such as the low automaticity, more operating observers, and even operative error which makes it very difficult to reduce the random observation error in some visual instruments. To overcome this drawback, we have successfully developed the digital zenith telescope prototype (DZT-1) with the aperture of 200 mm, using charge coupled device and other advanced technologies and new equipments. As proved by test observations, DZT-1 can observe thousands of stars over one night, which significantly reduces the random observation error and increases the observation accuracy. In addition, DZT-1 has a high degree of automation, even allowing unattended observation by remote control. Besides, DZT-1 has a small-size and is easy to move, making it convenient for mobile measurement of the deflection of the vertical. In summary, DZT can be widely used in the geoscience and astronomy fields.

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References

  1. Li DM, Jin WJ, Xia YF (2006) Astrometric Methods. China Science and Technology Press, Beijing (in Chinese)

    Google Scholar 

  2. Zhang CZ, Xia YF (1986) Astrometry. Higher Education Press, Beijing (in Chinese)

    Google Scholar 

  3. Ye SH, Huang C (2000) Astro-geodynamics. Shandong Science and Technology Press, Jinan (in Chinese)

    Google Scholar 

  4. Zhao M (2006) Introduction to astrometry. China Science and Technology Press, Beijing (in Chinese)

    Google Scholar 

  5. Li ZS, Zhang GD, Zhang HZ et al (1978) Correlation between the short anomalies of residuals of astronomical time and latitude and the major earthquakes around the observatories. Acta Geophys Sin 21:278–291 (in Chinese)

    Google Scholar 

  6. Zhang GD (1981) Deviation of the vertical caused by change of groundwater level before a strong earthquake. Acta Seismol Sin 3:152–158 (in Chinese)

    Google Scholar 

  7. Han YB, Hu H, Du HR (1986) Occurrence of short-period anomaly of residuals of astronomical time-latitude at Yunnan observatory preceding the Luquan earthquake (ML = 6.3). Chin Sci Bull 32:1244–1246 (in Chinese)

    Google Scholar 

  8. Hu H, Kan RJ, Wang R et al (1989) A method for predicting a strong earthquake by means of astrometric observations. Astron Astrophys 224:321–322

    Google Scholar 

  9. Liao DC, Zheng DW (1990) Earthquake (MS = 5) in Taicang and anomalous residuals of time determination at Shanghai Observatory. Chin Sci Bull (Chin Ver) 35:1838–1839 (in Chinese)

  10. Han YB (1993) Relationship between residual anomalies of time-latitude and earthquakes. Chin Sci Bull 38:303–307 (in Chinese)

    Google Scholar 

  11. Liao DC, Jin WJ, Zheng DW et al (1994) An analysis of optical observations in China during 1986 to 1991. Ann Shanghai Observatory Acad Sin 15:28–33 (in Chinese)

    Google Scholar 

  12. Zhang GD, Han YB, Zhao FY (2002) Earthquake precursors detected by astronomical observations. Acta Seismol Sin 24:75–81 (in Chinese)

    Google Scholar 

  13. Li ZX, Li H, Li YF et al (2005) Non-tidal variation in the deflection of the vertical at Beijing observatory. J Geod 78:588–593

    Article  Google Scholar 

  14. Hu H, Su YJ, Fu H et al (2007) Anomalies in time–latitude residuals at Yunnan Observatory before Dayao and Puer earthquakes. J Nat Disasters 16:106–110 (in Chinese)

    Google Scholar 

  15. Han YB, Ma LH, Hu H et al (2007) Application of astronomic time-latitude residuals in earthquake prediction. Earth Moon Planets 100:125–135

    Article  Google Scholar 

  16. Li ZX, Li H (2009) Earthquake–related gravity field changes at Beijing–Tangshan gravimetric network during 1987–1998. Stud Geophys Geod 53:185–197

    Article  Google Scholar 

  17. Han YB, Wang HQ, Yin ZQ et al (2012) Significance of feasibility to set up test measurement networks in Huabei and Xibei regions for variation of the vertical. Prog Geophys 27:1287–1293 (in Chinese)

    Google Scholar 

  18. Wang B, Yin ZQ, Han YB (2012) Progress of research on anomalies of astronomical time and latitude observations before earthquake. Chin Sci Bull 57:3547–3555

    Article  Google Scholar 

  19. Barlik M, Rogowski JB (1989) Variations of the plumb-line direction obtained from astronomical and gravimetric observations. Prace Nauk Politech Warsz 33:19–101

    Google Scholar 

  20. Jekeli C (1999) An analysis of vertical deflections derived from high degree spherical harmonic models. J Geod 73:10–22

    Article  Google Scholar 

  21. Schoebel R, Hein GW, Eissfeller B (2000) Renaissance of astrogeodetic levelling using GPS/CCD zenith camera. In: Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation, Institute of Navigation (ION), San Diego, CA, 2000. 732–740

  22. Hirt C (2003) The digital zenith camera TZK2-D a modern high precision geodetic instrument for automatic geographic positioning in real time. In: Payne HE, Jedrzejewski RI, Hook RN, (eds). Proceedings of the 12th Meeting of the Astronomical Data Analysis Software and Systems of the Space Telescope Science Institute—ASP Conference Series 295, Astronomical Society of the Pacific, USA, 2003.156–159

  23. Hirt C, Reese B (2004) High–precision astrogeodetic determination of a local geoid profile using the digital zenith camera system TZK2-D. CHGeoid 2003, Report 03–33 A, Bundesamt für Landestopographie (swisstopo), Wabern, Schweiz

  24. Hirt C (2006) Monitoring and analysis of anomalous refraction using a digital zenith camera system. Astron Astrophys 459:283–290

    Article  Google Scholar 

  25. Hirt C, Bürki B, Somieski AE et al (2010) Modern determination of vertical deflections using digital zenith cameras. J Survey Eng 136:1–12

    Article  Google Scholar 

  26. Bürki B, Müller A, Kahle HG (2003) DIADEM: The new digital astronomical deflection measuring system for high-precision measurements of deflections of the vertical at ETH Zurich. CHGeoid2003, Report 03–33 A, Bundesamt für Landestopographie (swisstopo), Wabern, Schweiz

  27. Gerstbach G, Pichler H (2003) A small CCD zenith camera (ZC–G1)-developed for rapid geoid monitoring in difficult projects. Publ Astron Obs Belgrade 75:221–228

    Google Scholar 

  28. Kudrys J (2007) Automatic determination of vertical deflection components from GPS and zenithal star observations. Acta Geodyn Geomater 4:169–172

    Google Scholar 

  29. Halicioglu K, Deniz R, Ozener H (2012) Digital zenith camera system for Astro-Geodetic applications in Turkey. J Geod Geoinf 1:115–120

    Article  Google Scholar 

  30. Abele M, Balodis J, Janpaule I et al (2012) Digital zenith camera for vertical deflection determination. Geod Cartogr 38:123–129

    Article  Google Scholar 

  31. Ron C, Štefka V, Vondrák J (2007) The new CCD zenith tube. Proc Int Astron Union 3:120–121

    Article  Google Scholar 

  32. Ogrizovic V (2009) A construction of an advanced measuring system for astro-geodetic determinations. Publ Astron Obs Belgrade 86:145–150

    Google Scholar 

  33. Hirt C, Kahlmann T (2004) Hochpräzise Neigungsmessung mit dem elektronischen Pendelneigungssensor HRTM. Zeitschrift für Vermessungswesen 129:266–276 (in German)

    Google Scholar 

  34. Yang HQ, Guo M, Ren X et al (2008) FPGA embedded system development based on EDK. China Machine Press, Beijing (in Chinese)

    Google Scholar 

Download references

Acknowledgments

We extend heartfelt thanks to Prof. Dongming Li for his enthusiastic help and guidance about data processing. And we are very grateful for the valuable discussions and help given by Profs. Ningsheng Hu, Ming Zhao and Hongqin Ji.

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Authors and Affiliations

  1. National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China

    Lili Tian, Yanben Han, Weidong Liu, Zheng Wang, Bo Wang, Zhiqiang Yin & Hongqi Wang

  2. College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao, 266590, China

    Jinyun Guo & Xiushan Lu

Authors
  1. Lili Tian
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  2. Jinyun Guo
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  3. Yanben Han
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  4. Xiushan Lu
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  5. Weidong Liu
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  6. Zheng Wang
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  7. Bo Wang
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  8. Zhiqiang Yin
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  9. Hongqi Wang
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Corresponding author

Correspondence to Lili Tian.

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Cite this article

Tian, L., Guo, J., Han, Y. et al. Digital zenith telescope prototype of China. Chin. Sci. Bull. 59, 1978–1983 (2014). https://doi.org/10.1007/s11434-014-0256-z

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  • DOI: https://doi.org/10.1007/s11434-014-0256-z

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