This table is available for ADQL queries and through the TAP endpoint.
Resource Description:
This service publishes plate scans of the Palomar-Leiden Troian surveys conducted between 1960 and 1977. The surveys led to the discovery of more than 2,000 asteroids (1,800 with orbital information), with another 2,400 asteroids, including 19 Trojans, found after further analysis of the plates.
Note that because of the large size of the plates, in this service each original plate is contained in two parts, marked with "_1" and "_2", respectively. The central parts of the two parts overlap.
For a list of all services and tables belonging to this table's resource, see Information on resource 'Scans of the Palomar-Leiden Trojan Survey Plates'
This table has an associated publication. If you use data from it, it may be appropriate to reference 1989A&A...224..299V (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.
To cite the table as such, we suggest the following BibTeX entry:
@MISC{vo:plts_data, year=2015, title={Scans of the Palomar-Leiden Trojan Survey Plates}, author={van Houten-Groeneveld, I. and van Houten, C.J. and Wisse-Schouten, M. and Bardwell, C. and Gehrels, T.}, url={http://dc.zah.uni-heidelberg.de/tableinfo/plts.data}, howpublished={{VO} resource provided by the {GAVO} Data Center}, doi = {10.21938/8jkMIdbl9xGrJn6_GDTzWA} }
Most plates had a Kodak 103a-O emulsion, exposed through a WG-2 filter.
One pair per field was taken each month on Kodak 103a-D emulsion, using a Y-6 filter.
Best effort is made in determining emulsion and filter; metadata regarding those values are incomplete.
Sorted alphabetically. [Sort by DB column index]
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 | VOX:Image_MJDateObs |
embargo | Embargo ends | Date the data will become/became public | a | N/A |
emulsion | Emulsion | Emulsion of the original plate [Note e] | N/A | instr.plate.emulsion |
exposure | Exp. time | Effective exposure time | s | time.duration;obs.exposure |
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 |
object | Targ. Obj. | Special object on plate | N/A | meta.id |
obsnotes | Notes | Observation Notes | N/A | meta.note |
owner | Owner | Owner of the data | N/A | N/A |
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 |
platenum | Plate ID | Plate ID | N/A | meta.id |
platepart | Plate Part | Scan index. Since the scanner used to digitise the plate was physically smaller than the plates, each plate scan consists of two parts. This number is either 1 or 2 correspondingly. | N/A | meta.id.part |
pub_did | PubDID | Publisher data set id; this is an identifier for the dataset in question and can be used to retrieve the data through, e.g., datalink. | N/A | meta.id;meta.main |
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 |
wfpdb_id | WFPDB | Plate identifier as in the WFPDB | N/A | meta.id |
Columns that are parts of indices are marked like this.
The following services may use the data contained in this table:
VO nerds may sometimes need VOResource XML for this table.
Most exposures were made on Kodak 103a-O emulsion, with a WG2 filter.
One pair per field was taken each month on Kodak 103a-D emulsion, using a Y-6 filter.
Best effort is made in this service to reliably identify the emulsion and filter used in each exposure, but plate metadata has been incomplete. Use the information with caution.
Copyright and such: