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Further access options are discussed below
For a list of all services and tables belonging to this service's resource, see Information on resource 'Digitized First Byurakan Survey (DFBS) Plate Scans'
You can access this service using:
This service is published as follows:
local means it is listed on our front page, ivo_managed means it has a record in the VO registry.
Other services provided on the underlying data include:
The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):
| Name | Table Head | Description | Unit | UCD |
|---|---|---|---|---|
| FORMAT | Image format | Requested format of the image data | N/A | N/A |
| hFORMAT | Image format | Requested format of the image data | N/A | N/A |
| hINTERSECT | Intersection type | Relation of image and specified Region of Interest. | N/A | N/A |
| hPOS | Position | ICRS Position, RA,DEC, or Simbad object (e.g., 234.234,-32.45) | N/A | pos.eq |
| hSIZE | Field size | Size in decimal degrees (e.g., 0.2 or 1,0.1) | deg | N/A |
| INTERSECT | Intersection type | Relation of image and specified Region of Interest. | N/A | N/A |
| maxrec | Match limit | Maximum number of records returned. Pass 0 to retrieve service parameters. | N/A | N/A |
| plate | Plate id | Identifier (plate number) for the DFBS plate. | N/A | meta.id |
| POS | Position | ICRS Position, RA,DEC decimal degrees (e.g., 234.234,-32.46) | N/A | pos.eq |
| responseformat | Output Format | File format requested for output. | N/A | meta.code.mime |
| SIZE | Field size | Size in decimal degrees (e.g., 0.2 or 1,0.1) | deg | N/A |
| verb | Verbosity | Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. | N/A | N/A |
The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.
| Name | Table Head | Description | Unit | UCD |
|---|---|---|---|---|
| accref | Product key | Access key for the data | N/A | meta.ref.url |
| accsize | File size | Size of the data in bytes | byte | VOX:Image_FileSize |
| bandpassHi | Band upper | Upper limit of the bandpass (in BandPass_Unit units) | m | instr.bandpass;stat.max |
| bandpassId | Bandpass | Freeform name of the bandpass used | N/A | instr.bandpass |
| bandpassLo | Band lower | Lower limit of the bandpass (in BandPass_Unit units) | m | instr.bandpass;stat.min |
| bandpassRefval | Band Ref. | Characteristic quantity for the bandpass of the image | m | instr.bandpass;stat.median |
| bandpassUnit | Bandpass unit | Unit of bandpass specifications (always m). | N/A | N/A |
| centerAlpha | Ctr. RA | Approximate center of image, RA | deg | pos.eq.ra |
| centerDelta | Ctr. Dec | Approximate center of image, Dec | deg | pos.eq.dec |
| coverage | Coverage | Field covered by the image | deg | N/A |
| dateObs | Obs. date | Epoch at midpoint of observation | d | time;obs.exposure |
| dlurl | Datalink Access | URL of a datalink document for the dataset (cutouts, different formats, etc) | N/A | N/A |
| exptime | Exptime | Exposure time. | s | N/A |
| imageTitle | Title | Synthetic name of the image | N/A | meta.title |
| instId | Instrument | Identifier of the originating instrument | N/A | meta.id;instr |
| mime | Type | MIME type of the file served | N/A | meta.code.mime |
| nAxes | #axes | Number of axes in data | N/A | pos.wcs.naxes |
| pixelScale | Scales | The pixel scale on each image axis | deg/pixel | pos.wcs.scale |
| pixelSize | Axes Lengths | Number of pixels along each of the axes | pixel | pos.wcs.naxis |
| pixflags | P. Flags | Flags specifying the processing done (C-original; F-resampled; Z-fluxes valid; X-not resampled; V-for display only | N/A | meta.code |
| plate | Plate id | Identifier (plate number) for the DFBS plate. | N/A | meta.id |
| publisher_did | Publisher_did | Dataset identifier assigned by the publisher. | N/A | meta.ref.uri;meta.curation |
| refFrame | Ref. Frame | Coordinate system reference frame | N/A | pos.frame |
| wcs_cdmatrix | CD matrix | FITS WCS CDij matrix | deg/pixel | pos.wcs.cdmatrix |
| wcs_equinox | Equinox | Equinox of the given coordinates | yr | time.equinox |
| wcs_projection | Proj. | FITS WCS projection type | N/A | pos.wcs.ctype |
| wcs_refPixel | Ref. pixel | WCS reference pixel | pixel | pos.wcs.crpix |
| wcs_refValues | Ref. values | World coordinates at WCS reference pixel | deg | pos.wcs.crval |
The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.
| Name | Table Head | Description | Unit | UCD | Verb. Level |
|---|---|---|---|---|---|
| centerAlpha | Ctr. RA | Approximate center of image, RA | deg | pos.eq.ra | 0 |
| centerDelta | Ctr. Dec | Approximate center of image, Dec | deg | pos.eq.dec | 0 |
| imageTitle | Title | Synthetic name of the image | N/A | meta.title | 0 |
| dateObs | Obs. date | Epoch at midpoint of observation | d | time;obs.exposure | 0 |
| accref | Product key | Access key for the data | N/A | meta.ref.url | 1 |
| plate | Plate id | Identifier (plate number) for the DFBS plate. | N/A | meta.id | 1 |
| bandpassId | Bandpass | Freeform name of the bandpass used | N/A | instr.bandpass | 10 |
| accsize | File size | Size of the data in bytes | byte | VOX:Image_FileSize | 11 |
| pixelScale | Scales | The pixel scale on each image axis | deg/pixel | pos.wcs.scale | 12 |
| instId | Instrument | Identifier of the originating instrument | N/A | meta.id;instr | 15 |
| pixelSize | Axes Lengths | Number of pixels along each of the axes | pixel | pos.wcs.naxis | 15 |
| exptime | Exptime | Exposure time. | s | N/A | 15 |
| publisher_did | Publisher_did | Dataset identifier assigned by the publisher. | N/A | meta.ref.uri;meta.curation | 15 |
| mime | Type | MIME type of the file served | N/A | meta.code.mime | 20 |
| nAxes | #axes | Number of axes in data | N/A | pos.wcs.naxes | 20 |
| refFrame | Ref. Frame | Coordinate system reference frame | N/A | pos.frame | 20 |
| wcs_equinox | Equinox | Equinox of the given coordinates | yr | time.equinox | 20 |
| wcs_projection | Proj. | FITS WCS projection type | N/A | pos.wcs.ctype | 20 |
| wcs_refPixel | Ref. pixel | WCS reference pixel | pixel | pos.wcs.crpix | 20 |
| wcs_refValues | Ref. values | World coordinates at WCS reference pixel | deg | pos.wcs.crval | 20 |
| wcs_cdmatrix | CD matrix | FITS WCS CDij matrix | deg/pixel | pos.wcs.cdmatrix | 20 |
| bandpassUnit | Bandpass unit | Unit of bandpass specifications (always m). | N/A | N/A | 20 |
| bandpassRefval | Band Ref. | Characteristic quantity for the bandpass of the image | m | instr.bandpass;stat.median | 20 |
| bandpassHi | Band upper | Upper limit of the bandpass (in BandPass_Unit units) | m | instr.bandpass;stat.max | 20 |
| bandpassLo | Band lower | Lower limit of the bandpass (in BandPass_Unit units) | m | instr.bandpass;stat.min | 20 |
| pixflags | P. Flags | Flags specifying the processing done (C-original; F-resampled; Z-fluxes valid; X-not resampled; V-for display only | N/A | meta.code | 20 |
| coverage | Coverage | Field covered by the image | deg | N/A | 20 |
| owner | Owner | Owner of the data | N/A | N/A | 25 |
| embargo | Embargo ends | Date the data will become/became public | yr | N/A | 25 |
VOResource XML (that's something exclusively for VO nerds)
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