Table information for 'tgssadr.img_main'

General

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: This service queries the catalogue of images (5 def square mosaics) from the images of the TIFR GMRT Sky Survey (TGSS) Alternative Data Release (up to 1 deg square). This data release contains previously unpublished data from the TIFR GMRT Sky Survey (TGSS), which has been independently reprocessed. It includes continuum stokes I images of 99.5 percent of the radio sky north of -53° DEC (3.6π sr, or 90 percent of the full sky) at a resolution of 25“ x 25” north of 19° DEC and 25“ x 25” / cos(DEC-19°) south of 19°, and a median noise of 3.5 mJy/beam. The extracted radio source catalog contains positions, flux densities, sizes and more for 0.62 Million sources down to a 7-sigma peak-to-noise threshold.

For a list of all services and tables belonging to this table's resource, see Information on resource 'TGSSADR Image Catalogue'

Further information

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:tgssadr_img_main,
  year=2014,
  title={{TGSSADR} Image Catalogue},
  author={Intema, H.; Mooley, K.},
  url={https://vo.astron.nl/tableinfo/tgssadr.img_main},
  howpublished={{VO} resource provided by the The VO @ {ASTRON}}
}

Fields

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
accref Product key Access key for the data N/A N/A
owner Owner Owner of the data N/A N/A
embargo Embargo ends Date the data will become/became public a N/A
mime Type MIME type of the file served N/A meta.code.mime
accsize File size Size of the data in bytes byte VOX:Image_FileSize
centerAlpha Ctr. RA Approximate center of image, RA deg POS_EQ_RA_MAIN
centerDelta Ctr. Dec Approximate center of image, Dec deg POS_EQ_DEC_MAIN
imageTitle Title Synthetic name of the image N/A VOX:Image_Title
instId Instrument Identifier of the originating instrument N/A INST_ID
dateObs Obs. date Epoch at midpoint of observation d VOX:Image_MJDateObs
nAxes #axes Number of axes in data N/A VOX:Image_Naxes
pixelSize Axes Lengths Number of pixels along each of the axes pix VOX:Image_Naxis
pixelScale Scales The pixel scale on each image axis deg/pix VOX:Image_Scale
refFrame Ref. Frame Coordinate system reference frame N/A VOX:STC_CoordRefFrame
wcs_equinox Equinox Equinox of the given coordinates yr VOX:STC_CoordEquinox
wcs_projection Proj. FITS WCS projection type N/A VOX:WCS_CoordProjection
wcs_refPixel Ref. pixel WCS reference pixel pix VOX:WCS_CoordRefPixel
wcs_refValues Ref. values World coordinates at WCS reference pixel deg VOX:WCS_CoordRefValue
wcs_cdmatrix CD matrix FITS WCS CDij matrix deg/pix VOX:WCS_CDMatrix
bandpassId Bandpass Freeform name of the bandpass used N/A VOX:BandPass_ID
bandpassUnit Bandpass unit Unit of bandpass specifications (always m). N/A VOX:BandPass_Unit
bandpassRefval Band Ref. Characteristic quantity for the bandpass of the image m VOX:BandPass_RefValue
bandpassHi Band upper Upper limit of the bandpass (in BandPass_Unit units) m VOX:BandPass_HiLimit
bandpassLo Band lower Lower limit of the bandpass (in BandPass_Unit units) m VOX:BandPass_LoLimit
pixflags P. Flags Flags specifying the processing done (C-original; F-resampled; Z-fluxes valid; X-not resampled; V-for display only N/A VOX:Image_PixFlags
coverage Coverage Field covered by the image deg N/A
BMAJ Beam Maj. Axis Beam Major Axis, in arcsec arcsec N/A
BMIN Beam Min. Axis Beam Minor Axis, in arcsec arcsec N/A
BPA Beam Position Angle Beam Position Angle, in deg deg N/A

Columns that are parts of indices are marked like this.

Other

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VOResource

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