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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.02122 |
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| _version_ | 1866912360735703040 |
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| author | Negi, Shefali Ebr, Jan Karpov, Sergey Eliášek, Jiří |
| author_facet | Negi, Shefali Ebr, Jan Karpov, Sergey Eliášek, Jiří |
| contents | The new method for aerosol measurement using wide-field stellar photometry was originally developed for B-filter data. The dependence of VAOD (vertical aerosol optical depth) on wavelength can be used to understand the physical characteristics of aerosol. The method has been extended for V and R filters using the Gaia stellar photometric catalog as the reference. We calculated the coefficients of the equation describing molecular and aerosol extinction of the atmosphere. For data in a particular filter, they depend on the telescope's location. Light towards shorter wavelengths has higher extinction. The VAOD, calculated in B, V, and R filters does not show monotonous dependence on wavelength, and there is increased dependence on the photometric methods for V and R filters. We studied the possible reasons for this unexpected behavior. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_02122 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Aerosol Measurement in B, V, and R Filters using Wide-field Photometry Negi, Shefali Ebr, Jan Karpov, Sergey Eliášek, Jiří Instrumentation and Methods for Astrophysics The new method for aerosol measurement using wide-field stellar photometry was originally developed for B-filter data. The dependence of VAOD (vertical aerosol optical depth) on wavelength can be used to understand the physical characteristics of aerosol. The method has been extended for V and R filters using the Gaia stellar photometric catalog as the reference. We calculated the coefficients of the equation describing molecular and aerosol extinction of the atmosphere. For data in a particular filter, they depend on the telescope's location. Light towards shorter wavelengths has higher extinction. The VAOD, calculated in B, V, and R filters does not show monotonous dependence on wavelength, and there is increased dependence on the photometric methods for V and R filters. We studied the possible reasons for this unexpected behavior. |
| title | Aerosol Measurement in B, V, and R Filters using Wide-field Photometry |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2505.02122 |