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| VO Requirement | Value | Source |
|---|---|---|
access_url | ||
| access_estsize | files.filesize, or combined value for an image set | |
| dataproduct_type | 'image' | default |
| access_format | 'fits' | default |
obs_publisher_did | Obtained upon registering with the Virtual Observatory | |
| facility_name | 'NRAO' | default |
| t_resolution | images.image_integration_time | |
| t_xel | 1 | default |
| em_xel | 1 | default |
| pol_xel | 1 | default |
Thumbnail
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Thumbnails
We won't store thumbnails in NGAS as such, for each we will:
- compute the sha1 hash of the file
- store the file in a filesystem at $ROOT/$1/$2/$3/$FILENAME, where $ROOT is a CAPO property that maps to the root of the filesystem, $1 is the first two characters
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- of the sha1 sum, $2 the second two
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- , and $3 the third two.
- in the metadata database we will store the $1/$2/$3/$FILENAME path
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