Information on Service 'Web access to Bochum Galactic Disk Survey (BGDS) images'

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The Bochum Galactic Disk Survey is a project to monitor the stellar content of the Galactic disk in a 6 degree wide stripe centered on the Galactic plane. The data has been recorded from September 2010 to September 2019 with the RoBoTT Telecsope at the Universitaetssternwarte Bochum near Cerro Armazones in the Chilean Atacama desert. It contains measurements of more than 2x10^7 stars. The second and final data release contains follow-up observations from January 2017 to September 2019 in Sloan r and i and intermittent measurements in Johnson UVB, Sloan z and the narrowbands OIII, NB, Halpha and SII.

For a list of all services and tables belonging to this service's resource, see Information on resource 'Bochum Galactic Disk Survey BGDS'

Overview

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This service is not published. This can mean that it was deemed too unimportant, for internal use only, or is just a helper for a published service. Equally likely, however, it is under development, abandoned in development or otherwise unfinished. Exercise caution.

Other services provided on the underlying data include:

Spatial Coverage

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
bandpassId Bandpass Freeform name of the bandpass used N/A instr.bandpass
dateObs Obs. date Epoch at midpoint of observation d time;obs.exposure
field Field Survey field observed. N/A meta.id;obs.field
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
POS Position ICRS Position, RA,DEC decimal degrees (e.g., 234.234,-32.46) N/A pos.eq
SIZE Field size Size in decimal degrees (e.g., 0.2 or 1,0.1) deg N/A

Default Output Fields

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.

NameTable Head DescriptionUnitUCD
accref Image Access key for the data N/A meta.ref.url
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
imageTitle Title Synthetic name of the image N/A meta.title
plateCenter Plate Center Plate Canter RA and Dec N/A N/A

VOTable Output Fields

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.

NameTable Head DescriptionUnitUCD 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
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
field Field Survey field observed. N/A meta.id;obs.field 15
exposure Exp. time Effective exposure time (sum of exposure times of all images contributing here). s time.duration;obs.exposure 15
pub_did P. DID Dataset identifier assigned by the publisher N/A meta.id;meta.main 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
airmass Airmass Airmass at mean epoch N/A obs.airMass 21
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
moondist Moon dist. Moon distance at mean epoch deg obs.param 25

If you use GDS data, please cite 2015AN....336..590H.

VOResource XML (that's something exclusively for VO nerds)