2015-11-09T16:00:00 1000 zCOSMOS Bright Spectroscopic Observations DR2 Bongiorno, A. The zCOSMOS redshift survey used 600h on the VIMOS spectrograph spread over five observing seasons (2005-2009) to obtain spectra of about 20,000 galaxies selected to have Iab < 22.5 across the full 1.7 deg2 of the COSMOS field. This part, "zCOSMOS-bright", was designed to yield a high and fairly uniform sampling rate (about 70%), with a high success rate in measuring redshifts (approaching 100% at 0.5 < z < 0.8), and with sufficient velocity accuracy (about 100 km/s) to efficiently map the environments of galaxies down to the scale of galaxy groups out to redshifts z ~ 1. galaxies redshift-surveys observational-cosmology spectroscopy 2008Msngr.134...35L Survey VIMOS VLT Optical pointed archival MAXREC=1 //products#table //ssap#plainlocation //ssap#simpleCoverage make_view previews "\schema.data" "application/fits" \standardPreviewPath "image/png" getWCSAxis(@header_, 1) vars["ESO INS ADF SKYREG"]/3600. @RA @DEC @ssa_aperture sdlssa_pubDID//ssap#view//obscore#publishSSAPMIXC //ssap#sdm-instance from gavo.protocols import products from gavo.utils import pyfits fitsPath = products.RAccref.fromString( self.sourceToken["accref"]).localpath hdus = pyfits.open(fitsPath) ax = utils.getWCSAxis(hdus[0].header, 1) for spec, flux in enumerate(hdus[0].data[0]): yield {"spectral": ax.pix0ToPhys(spec), "flux": flux} hdus.close() zCosmos Datalink Service Slicing, dicing, and format conversion for the zCOSMOS spectra data "\rdId#data" "\rdId#build_sdm_data" if descriptor.pubDID is None: return yield descriptor.makeLinkFromFile( base.getConfig("inputsDir") / descriptor.accref, description="Spectrum as the original 1D array") zCosmos Web zCosmos Bright Spectroscopic Observations DR2 application/x-votable+xml application/x-votable+xml application/fits accref, mime, ssa_targname, ssa_aperture, ssa_dateObs, datalink zCosmos SSAP zCosmos Bright Spectroscopic Observations DR2 pointed MAXREC=1 archival query auto ssa/ssap.xml rows = self.getVOTableRows() self.assertEqual(len(rows), 1) self.assertAlmostEqual(rows[0]['ssa_specend'], 9.69458e-07, 10) self.assertEqual(rows[0]['accsize'], 37440) self.assertEqual(rows[0]['ssa_dstitle'], 'ESO-VLT-U3 238326') self.assertAlmostEqual(rows[0]['ssa_specres'], 2.5e-10) /getproduct/zcosmos/data/zCOSMOS_BRIGHT_DR2_000826802_ZCMRa26_M1_Q4_13_1.fits self.assertHasStrings("PNG", b"\\xefs\\xee'") sdl/dlget 8104.0599727630621.957910040133415e-18", 'value="37440"') ]]> sdl/dlmeta rows = self.getVOTableRows() # rows[0] is the original FITS self.assertEqual(rows[0]["description"], "Spectrum as the original 1D array") self.assertEqual(rows[0]["semantics"], "#progenitor") fitsContent = utils.urlopenRemote(rows[0]["access_url"]).read() self.assertEqual(fitsContent[:6], b"SIMPLE", "#progenitor link in datalink meta broken") # rows[1] is the processing service exercised above self.assertEqual( rows[1]["description"], "Slicing, dicing, and format conversion for the zCOSMOS spectra") # the rest is #this and #preview, which I'm too bored to exercise. /tap/sync row = self.getFirstVOTableRow(rejectExtras=False) self.assertEqual(row["em_xel"], 1642) self.assertEqual(row["o_ucd"], "phot.flux.density;em.wl") self.assertEqual(row["em_ucd"], "em.wl;obs.atmos") res = urllib.request.urlopen(row["access_url"]) self.assertEqual(res.info()["content-type"], row["access_format"]) res.read() # be nice and exhaust the remote side. self.assertEqual(row["facility_name"], "VLT") self.assertEqual(row["instrument_name"], "VIMOS") self.assertAlmostEqual(row["em_max"], 9.69457914834493e-07) self.assertAlmostEqual(row["em_res_power"], 2202.0425) self.assertAlmostEqual(row["s_fov"], 0.000833333353511989) self.assertTrue(b"TD>Polygon ICRS 149.73" in self.data, "New-style polygon serialisation in obscore?")