Table 1
List of datasets analysed in this study.
| Observatory | Acronym | Exposures #of frames | Wavelength [nm] | SW [nm] | Period | Pixel scale [″/pixel] | Images | Ref. |
|---|---|---|---|---|---|---|---|---|
| Rome PSPT | RP | 25 | 393.4 | 0.25 | 1996–2020 | 2.0 | 3513 | 1 |
| 409.2 | 0.25 | 1996–2020 | 2.0 | 4367 | 1 | |||
| 607.1 | 0.5 | 1997–2020 | 2.0 | 4135 | 1 | |||
| Rome PSPT | RPS | 1 | 393.4 | 0.25 | 2000–2020 | 2.0 | 4230 | 1 |
| 607.1 | 0.5 | 2000–2020 | 2.0 | 3766 | 1 | |||
| San Fernando CFDT2 | SF | 2 | 393.4 | 0.9 | 1996–2013 | 2.6 | 3380 | 2 |
Notes. Columns are: name of the observatory, abbreviation used in this study, number of summed frames, central wavelength, spectral width, and period of observations, average pixel scale of the images, total number of available images, and the bibliography entry.
References. (1) Ermolli et al. (2007); (2) Chapman et al. (2013).
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