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public:lta_howto [2017-05-24 07:39] – roberto pizzo | public:lta_howto [2018-02-16 09:40] – [User Access] more detailed description on how to access public data wiel | ||
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This is a short manual on how to search for and retrieve data from the LOFAR Long Term Archive. | This is a short manual on how to search for and retrieve data from the LOFAR Long Term Archive. | ||
- | To access the LTA, go to: [[http://lofar.target.rug.nl|lofar.target.rug.nl]] | + | To access the LTA, go to: [[https://lta.lofar.eu|lta.lofar.eu]] |
For background information and in case of problems, please refer to the [[public: | For background information and in case of problems, please refer to the [[public: | ||
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The LTA catalogue can be searched using the anonymous account (AWWORLD). This account gives direct access to the project "All public data", and search queries will return results of the entire catalogue because metadata are public for all LTA content. | The LTA catalogue can be searched using the anonymous account (AWWORLD). This account gives direct access to the project "All public data", and search queries will return results of the entire catalogue because metadata are public for all LTA content. | ||
- | Staging and subsequent downloading of public data always requires an account (if you have it, this is your MoM account) with LTA user access. If you do not have an account yet, you can register with " | + | Staging and subsequent downloading of public data always requires an account (if you have it, this is your MoM account) with LTA user access. If you do not have an account yet, you can register with " |
+ | |||
+ | Step-by-step guide to access public data: | ||
+ | * log in to https:// | ||
+ | * click SELECT PROJECT in the top menu, then select 'All Public data' from the list of project groupings | ||
+ | * click SEARCH in the top menu | ||
+ | * click on " | ||
+ | * choose “All Observations and Pipelines” | ||
+ | * find the relevant observation by either: | ||
+ | * choosing the project code from the dropdown list (if you know which project your observation of interest was taken under) | ||
+ | * specify the ' | ||
+ | * click the ' | ||
+ | * from the screen that follows, you should be able to stage the dataproducts | ||
=== Project data === | === Project data === | ||
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- | {{:public:lta_navigation.png|}} | + | {{:public:lta_menu.png|}} |
A " | A " | ||
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Searching the catalogue is easiest by selecting one of the otions in the " | Searching the catalogue is easiest by selecting one of the otions in the " | ||
- | Another option is to choose "Show Latest", | + | Another option is to choose "Show Latest", |
=== Finding Data === | === Finding Data === | ||
- | {{:public:lta_observations.png|}} | + | {{:public:lta_observations_2017.png?900|}} |
Depending on the search parameters, e.g., which data products were requested (observation, | Depending on the search parameters, e.g., which data products were requested (observation, | ||
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Once you have a list of dataproducts, | Once you have a list of dataproducts, | ||
- | {{:public:lta_howto2.png|}} | + | {{:public:lta_staging_1.png|}} |
The LOFAR Archive stores data on magnetic tape. This means that it cannot be downloaded right away, but has to be copied from tape to disk first. This process is called ' | The LOFAR Archive stores data on magnetic tape. This means that it cannot be downloaded right away, but has to be copied from tape to disk first. This process is called ' |