Differences
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projects:lofar_public:rfi_de605:index [2024/12/12 14:19] wucknitz |
projects:lofar_public:rfi_de605:index [2024/12/12 15:21] (current) wucknitz |
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| And here the corresponding dynamic spectra with one azimuth (2-deg steps) per page: {{:projects:lofar_public:rfi_de605:tbb_image_horizon_spec_de605_2024-12-02_dynspec.pdf}} \\ | And here the corresponding dynamic spectra with one azimuth (2-deg steps) per page: {{:projects:lofar_public:rfi_de605:tbb_image_horizon_spec_de605_2024-12-02_dynspec.pdf}} \\ | ||
| The labels on the horizontal axis are a bit confusing. This is actually in seconds if we concatenate all dumps by skipping the gaps between them. It is about 1.5 sec per dump. The potential celltower RFI is strongest on page 74:\\ | The labels on the horizontal axis are a bit confusing. This is actually in seconds if we concatenate all dumps by skipping the gaps between them. It is about 1.5 sec per dump. The potential celltower RFI is strongest on page 74:\\ | ||
| - | {{:projects:lofar_public:rfi_de605:tbb_image_horizon_spec_de605_2024-12-02_dynspec_page74.png?direct&600}} | + | {{:projects:lofar_public:rfi_de605:tbb_image_horizon_spec_de605_2024-12-02_dynspec_page74.png?direct&300}} |
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| + | It is unclear what causes the dips in frequency and intensity below times of 10 and between 45 and 65. | ||
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| + | The other features (A-C above) are either absent or less obvious now. The weird structure that can be seen on page 20 (second dump in the left) is actually the Sun, which happens to be near the horizon and active at this time: \\ | ||
| + | {{:projects:lofar_public:rfi_de605:tbb_image_horizon_spec_de605_2024-12-02_dynspec_page20.png?direct&300}} | ||
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| + | === LBA beamformed === | ||
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| + | After the TBB dumps, we also recorded a beam towards an azimuth of -33.5 deg at the horizon for 1.5 minutes starting at 14:45 on 3rd Dec. That is after the dip of the celltower signal shown above, but at a lower level than the day before. | ||
