Page History
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| Service name | Type | Table name | Service description | Service info |
|---|---|---|---|---|
| ADQL Query | system | N/A | This provides a form that can be used to perform ADQL queries and get results in different formats. | info (no columns) |
| LBCS Calibrator Search | catalogue | lbcs.main | Catalog of calibrators from the | info |
| LoLSS - Image Cutout Service | image cutout | lolss.mosaic | info | |
| LoLSS source catalog | catalogue | lolss.source_catalog | Source catalogue of the | info |
| LoTSS-DR1 Cross-Matched Source Catalogue | catalogue | hetdex.main_merged | info | |
| LoTSS-DR1 Image Archive | image | hetdex.hetdex_images | Images of the . | info |
| LoTSS-DR1 Image Cutout Service | image cutout | hetdex.hetdex_images | Cutouts from the images of the . | info |
| LoTSS-DR1 Raw Radio Catalogue Cone Search | catalogue | hetdex.main | info | |
| LoTSS-PDR Image Archive | image | lofartier1.img_main | Images of the . | info |
| LoTSS-PDR Image Cutout Service | image cutout | lofartier1.img_main | Cutouts from the images of the . | info |
| LoTSS-PDR Source Catalogue | catalogue | lofartier1.main | info | |
| M) Apertif DR1 - Continuum images | image | apertif_dr1.continuum_images | Continuum images of the Apertif First Data Release (Apertif DR1). | info |
| M) Apertif DR1 - HI spectral cubes | cube | apertif_dr1.spectral_cubes | HI spectral cubes of the Apertif First Data Release (Apertif DR1). | info |
| M) Apertif DR1 - Polarization images and cubes | image/cube | apertif_dr1.pol_cubes | Stokes V image and Stokes Q and U cubes of the Apertif First Data Release (Apertif DR1). | info |
| MSSS Verification Field Images | image | mvf.msssvf_img_main | info | |
| MSSS Verification Field Sources | catalogue | mvf.main | info | |
| S) Apertif DR1 - Field calibrated visibilities | catalogue | apertif_dr1.calibrated_visibilities | Catalogue of the properties from the calibrated visibilities of the fields from the Apertif First Data Release (Apertif DR1). | info |
| S) Apertif DR1 - Field raw visibilities | catalogue | apertif_dr1.raw_visibilities | Catalogue of the properties from the raw visibilities of the fields from the from the Apertif First Data Release (Apertif DR1). | info |
| S) Apertif DR1 - Flux calibrator raw visibilities | catalogue | apertif_dr1.flux_cal_visibilities | Catalogue of the properties from the calibrated visibilities of the flux calibrators from the Apertif First Data Release (Apertif DR1). | info |
| S) Apertif DR1 - Pol. calibrator raw visibilities | catalogue | apertif_dr1.pol_cal_visibilities | Catalogue of the properties from the calibrated visibilities of the polarisation calibrators from the Apertif First Data Release (Apertif DR1). | info |
| SAURON HI Survey Images | image | sauron.mom0 | info | |
| SAURON HI Survey Velocity Fields | image | sauron.main | info | |
| TGSSADR Image Archive | image | tgssadr.img_main | Images of the | info |
| TGSSADR Image Cutout Service | image cutout | tgssadr.img_main | Cutouts from the images of the | info |
| TGSSADR Source Catalogue | catalogue | tgssadr.main | Catalogue of the radio sources in the . | info |
| The VO @ ASTRON TAP service | system | N/A | (info only): description on how to access the tables using the TAP protocol. | info (no columns) |
| Apertif DR1 beam cubes (table only, no service) | apertif_dr1.beam_cubes | Beam cubes from the Apertif First Data Release (Apertif DR1), no connected service but accessible via TAP and linked from the other Apertif DR1 tables through DataLink. | N/A |
Data access through
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DaCHS interface
The DaCHS system comes with a web view on the services offered. Even though the interface is somewhat rudimentary, it does offer the relevant functionality to query data in the ASTRON VO. The main page, listing all services (as listed in the table above) can be fount at https://vo.astron.nl . Specific services are linked to that (either by clicking on the name of the collection, or the Q icon net to it.
Selecting a data collection allows the user to perform a cone search through a webform (Fig. 401). The result is either a source or Gaussian list, or a table of data products of that given class overlapping a given pointing. The size of the continuum images as well as the cubes extend beyond the 10% primary beam level for cleaning the secondary lobes of bright offset sources. To ensure that the search is done in the area of maximum sensitivity the search is performed on a maxim radius of 0.75 degrees from the center (this represents the average value of where the sensitivity drops). This value can be modified using the Max distance from center. A different output with respect to the default can be customized using More output fields selection button.
| Info | ||
|---|---|---|
| ||
 Fig. 40 1 Query search form for continuum images. |
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