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| DOI | 10.1007/s11207-019-1393-y |
| Measurement of Astronomical Seeing Using Long Exposure Solar Images | |
| Rengaswamy, Sridharan; Ravindra, B.; Prabhu, K. | |
| 通讯作者 | Rengaswamy, Sridharan |
| 来源期刊 | SOLAR PHYSICS
 |
| ISSN | 0038-0938 |
| EISSN | 1573-093X |
| 出版年 | 2019 |
| 卷号 | 294期号:1 |
| 英文摘要 | We extend our modified parameter search method (Sridharan, Dashora, and Venkatakrishnan, Solar Phys.222, 35, 2004) of estimating the Fried parameter (r0) from long exposure images to the images obtained from the H-telescope installed at Merak, acold desert on the Himalayas, with a modified criterion - the contrast ratio of the observed and the deconvolved images - to identify the true r0. We validated our new method by applying it to the solar granulation data and found that it is as accurate as our modified parameter search method. The median seeing at H - estimated from the data spanning over 5 months - is approximate to 2arc-sec and it corresponds to a median r0 of 6 cm. About 30% of the estimated values are above r0=7cm. The diurnal variation of the seeing is consistent with that expected for a lake-shore site. The significance of our method - extracting the underlying seeing from a single long exposure solar image - lies in the fact that it can be easily adopted to monitor seeing with small H-telescopes that are coveted and eagerly possessed by many solar observatories for patrolling solar flares and filament eruptions. |
| 英文关键词 | High resolution seeing Imaging Sun Chromosphere Fried's parameter |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | India |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000456088400001 |
| WOS关键词 | FRIEDS PARAMETER ; SCINTILLATION ; STATISTICS ; MONITOR |
| WOS类目 | Astronomy & Astrophysics |
| WOS研究方向 | Astronomy & Astrophysics |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/218902 |
| 作者单位 | Indian Inst Astrophys, 2 Block, Bangalore 560034, Karnataka, India |
| 推荐引用方式 GB/T 7714 | Rengaswamy, Sridharan,Ravindra, B.,Prabhu, K.. Measurement of Astronomical Seeing Using Long Exposure Solar Images[J],2019,294(1). |
| APA | Rengaswamy, Sridharan,Ravindra, B.,&Prabhu, K..(2019).Measurement of Astronomical Seeing Using Long Exposure Solar Images.SOLAR PHYSICS,294(1). |
| MLA | Rengaswamy, Sridharan,et al."Measurement of Astronomical Seeing Using Long Exposure Solar Images".SOLAR PHYSICS 294.1(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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