Information on Service 'Boyden Station ADH Plates Web Service'

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The Armagh-Dunsink-Harvard Becker-Schmidt Telescope was deployed at Boyden Station, Maselspoort South Africa between 1965 and 1970. During that time, astronomers from Bamberg, Heidelberg, Hamburg and Münster took astronomical images there, with a focus on old star clusters, the Magellanic clouds, and the southern milky way. This service provides scans of the plates obtained.

For a list of all services and tables belonging to this service's resource, see Information on resource 'Boyden Station ADH Plates in Germany'

Overview

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:

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
dateObs Obs. date Epoch at midpoint of observation d VOX:Image_MJDateObs
hFORMAT Output 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) deg pos.eq
hSIZE Field size Size in decimal degrees (e.g., 0.2 or 1,0.1) deg N/A
object Targ. Obj. Special object on plate N/A meta.id
wfpdb_id WFPDB Plate identifier as in the WFPDB N/A meta.id

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
acc4 Scaled 1/4 Original plate scaled to 25% N/A N/A
accref Product key Access key for the data N/A N/A
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
datalink_url Datalink URL to a datalink document for this plate (ancillary files, cutouts) N/A meta.ref.url
dateObs Obs. date Epoch at midpoint of observation d VOX:Image_MJDateObs
emulsion Emulsion Plate emulsion N/A instr.plate.emulsion
envelope Envelope Plate envelope with plate metadata N/A meta.ref.url
exposure Exp. time Effective exposure time s time.duration;obs.exposure
imageTitle Title Synthetic name of the image N/A VOX:Image_Title
instId Instrument Identifier of the originating instrument N/A INST_ID
object Targ. Obj. Special object on plate N/A meta.id
obsnotes Notes Observation Notes N/A meta.note
wfpdb_id WFPDB Plate identifier as in the WFPDB N/A meta.id

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
dateObs Obs. date Epoch at midpoint of observation d VOX:Image_MJDateObs 0
centerAlpha Ctr. RA Approximate center of image, RA deg POS_EQ_RA_MAIN 0
centerDelta Ctr. Dec Approximate center of image, Dec deg POS_EQ_DEC_MAIN 0
imageTitle Title Synthetic name of the image N/A VOX:Image_Title 0
accref Product key Access key for the data N/A N/A 1
acc4 Scaled 1/4 Original plate scaled to 25% N/A N/A 1
bandpassId Bandpass Freeform name of the bandpass used N/A VOX:BandPass_ID 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/pix VOX:Image_Scale 12
object Targ. Obj. Special object on plate N/A meta.id 15
wfpdb_id WFPDB Plate identifier as in the WFPDB N/A meta.id 15
instId Instrument Identifier of the originating instrument N/A INST_ID 15
exposure Exp. time Effective exposure time s time.duration;obs.exposure 15
datalink_url Datalink URL to a datalink document for this plate (ancillary files, cutouts) N/A meta.ref.url 15
envelope Envelope Plate envelope with plate metadata N/A meta.ref.url 15
pixelSize Axes Lengths Number of pixels along each of the axes pix VOX:Image_Naxis 15
start_time Start Start of exposure d time.start;obs 15
end_time End End of exposure d time.end;obs 15
emulsion Emulsion Plate emulsion N/A instr.plate.emulsion 18
obsnotes Notes Observation Notes N/A meta.note 18
quality Quality Plate Quality N/A meta.note 18
filter Filter Instrument filter N/A instr.filter 18
mime Type MIME type of the file served N/A N/A 20
nAxes #axes Number of axes in data N/A VOX:Image_Naxes 20
refFrame Ref. Frame Coordinate system reference frame N/A VOX:STC_CoordRefFrame 20
wcs_equinox Equinox Equinox of the given coordinates yr VOX:STC_CoordEquinox 20
wcs_projection Proj. FITS WCS projection type N/A VOX:WCS_CoordProjection 20
wcs_refPixel Ref. pixel WCS reference pixel pix VOX:WCS_CoordRefPixel 20
wcs_refValues Ref. values World coordinates at WCS reference pixel deg VOX:WCS_CoordRefValue 20
wcs_cdmatrix CD matrix FITS WCS CDij matrix deg/pix VOX:WCS_CDMatrix 20
bandpassUnit Bandpass unit Unit of bandpass specifications (always m). N/A VOX:BandPass_Unit 20
bandpassRefval Band Ref. Characteristic quantity for the bandpass of the image m VOX:BandPass_RefValue 20
bandpassHi Band upper Upper limit of the bandpass (in BandPass_Unit units) m VOX:BandPass_HiLimit 20
bandpassLo Band lower Lower limit of the bandpass (in BandPass_Unit units) m VOX:BandPass_LoLimit 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 VOX:Image_PixFlags 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 a N/A 25

Copyright, License, Acknowledgements

The Boyden Station ADH plate scans is licensed under the Creative Commons Attribution 3.0 License

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