data:data_analysis_manual
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data:data_analysis_manual [2022/07/25 17:20] Peter Young [Read and display data (Python)] |
data:data_analysis_manual [2022/08/27 10:04] eric buchlin [Find data] link to using the catalog in IDL |
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| * The catalogue file generated from all SPICE files is accessible [[http://astro-sdc-db.uio.no/vol/spice/fits/spice_catalog.txt|through the UiO website]] (restricted to SPICE team) | * The catalogue file generated from all SPICE files is accessible [[http://astro-sdc-db.uio.no/vol/spice/fits/spice_catalog.txt|through the UiO website]] (restricted to SPICE team) | ||
| * How to use it in [[data:data_analysis_manual:read_catalog_python|Python]] | * How to use it in [[data:data_analysis_manual:read_catalog_python|Python]] | ||
| + | * How to use it in IDL: [[data:data_analysis_manual#the_spice_catalog|see below]] | ||
| * A CSV export of the part of the catalogue corresponding to each release is provided with the release. | * A CSV export of the part of the catalogue corresponding to each release is provided with the release. | ||
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| You can access ephemeris information from the SPICE headers. For example, the keywords: | You can access ephemeris information from the SPICE headers. For example, the keywords: | ||
| - | ''DSUN_AU'' - distance of the spacecraft from the Sun in AU\\ | + | DSUN\_AU - distance of the spacecraft from the Sun in AU\\ |
| - | ''EAR_TDEL'' - light travel time from the spacecraft to Earth (seconds) | + | EAR\_TDEL - light travel time from the spacecraft to Earth (seconds) |
| 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". | 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". | ||
| - | 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. | + | 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. |
data/data_analysis_manual.txt · Last modified: 2024/03/29 14:21 by eric buchlin
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