期刊文献+

Fabry-Prot based narrow band imager for solar filament observations

Fabry-Prot based narrow band imager for solar filament observations
下载PDF
导出
摘要 We have recently developed a narrow band imager(NBI) using an air gap based Fabry-P′erot(FP) interferometer at the Indian Institute of Astrophysics, Bangalore. Narrow band imaging is achieved by using an FP interferometer working in combination with an order sorting pre-filter. The NBI can be tuned to a different wavelength position on the line profile by changing the plate separation of the FP. The interferometer has a 50 mm clear aperture with a bandpass of ~247.8 m ?A and a free spectral range of~5.3 ?A at λ = 656.3 nm. The developed NBI is used to observe the solar filament in the Hα wavelength.The instrument is being used to image the Sun at chromospheric height and it is also able to scan the Hα spectral line profile at different wavelength positions. We have also made Doppler velocity maps at chromospheric height by taking the blue and red wing images at ±176 m ?A wavelength positions separately away from the line center of the spectral line. In this paper, we present a description of the NBI including lab test results of individual components and some initial observations carried out with this instrument. We have recently developed a narrow band imager(NBI) using an air gap based Fabry-P′erot(FP) interferometer at the Indian Institute of Astrophysics, Bangalore. Narrow band imaging is achieved by using an FP interferometer working in combination with an order sorting pre-filter. The NBI can be tuned to a different wavelength position on the line profile by changing the plate separation of the FP. The interferometer has a 50 mm clear aperture with a bandpass of ~247.8 m ?A and a free spectral range of~5.3 ?A at λ = 656.3 nm. The developed NBI is used to observe the solar filament in the Hα wavelength.The instrument is being used to image the Sun at chromospheric height and it is also able to scan the Hα spectral line profile at different wavelength positions. We have also made Doppler velocity maps at chromospheric height by taking the blue and red wing images at ±176 m ?A wavelength positions separately away from the line center of the spectral line. In this paper, we present a description of the NBI including lab test results of individual components and some initial observations carried out with this instrument.
出处 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2016年第1期79-88,共10页 天文和天体物理学研究(英文版)
关键词 instrumentation: interferometers -- instrumentation: spectrographs -- methods: observational-- Sun: chromosphere -- Sun: filaments/prominences instrumentation: interferometers -- instrumentation: spectrographs -- methods: observational-- Sun: chromosphere -- Sun: filaments/prominences
  • 相关文献

参考文献26

  • 1Bello Gonz~ilez, N., & Kneer, E 2008, A&A, 480, 265. 被引量:1
  • 2Born, M., & Wolf, E. 1989, Principles of Optics, Pergamon Press Elmsford Cavallini, F. 2006, Sol. Phys., 236, 415. 被引量:1
  • 3Chae, J. 2004, Sol. Phys., 221, 1. 被引量:1
  • 4Darlin, J. S., Sriram, K. V., Kothiyal, M. P., et al. 1995.Appl. Opt., 34, 2886. 被引量:1
  • 5Gary, G. A., Balasubramaniam, K. S., & Sigwarth, M. 2003,in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 4853, Innovative Telescopes and Instrumentation for Solar Astrophysics, eds. S. L. Keil, & S. V. Avakyan, 252. 被引量:1
  • 6Gullixson, C. 1998, Characteristics of available Fabry-Perot fil- ters, Tech. Memo. National Solar Observatory. 被引量:1
  • 7Gupta, S. K., Mathew, D., S. K. J. A., & Srivastava, N. 2008, in Astronomical Society of India Conference Series, National Space Science Symposium, NSSS-2008. 被引量:1
  • 8Harvey, J. W., Bolding, J., Clark, R., et al. 2011, in AAS/Solar Physics Division Abstracts #42, 1745. 被引量:1
  • 9AAj , Hasan, S. S., Soltau, D., K~cher, H., et al. 2010, Astronomische Nachrichten, 331,628. 被引量:1
  • 10Joshi, A. D., Forbes, T. G., Park, S.-H., et al. 2015, ApJ, 798, 97. 被引量:1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部