data:data_analysis_manual
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data:data_analysis_manual [2022/03/31 23:56] Peter Young [SPICE instrument and capabilities] |
data:data_analysis_manual [2022/07/25 17:23] Peter Young [Ephemeris information] |
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| Use a 3-button mouse to browse the images and spectra: the middle button allows you to select a new pixel, the left button zooms in and the right button zooms out. | Use a 3-button mouse to browse the images and spectra: the middle button allows you to select a new pixel, the left button zooms in and the right button zooms out. | ||
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| + | ===== Ephemeris information ===== | ||
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| + | You can access ephemeris information from the SPICE headers. For example, the keywords: | ||
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| + | DSUN\_AU - distance of the spacecraft from the Sun in AU\\ | ||
| + | EAR\_TDEL - light travel time from the spacecraft to Earth (seconds) | ||
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| + | The full list of keywords is given in the [[https://spice.ias.u-psud.fr/spice-data/documents/SPICE-UIO-DPDD-0002-1.4-Data_Product_Description_Document.pdf|DPDD]] - search for "Solar ephemeris keywords". | ||
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| + | Users should make sure to correct the SPICE observing times for EAR\_TDEL in order to compare with observations from Earth-orbiting spacecraft. This is especially important for highly-dynamic structures such as flares or CMEs. | ||
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| ===== Read and display data (Python) ===== | ===== Read and display data (Python) ===== | ||
data/data_analysis_manual.txt · Last modified: 2024/03/29 14:21 by eric buchlin
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