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VISTA/WFCAM pipelines

VISTA/WFCAM pipelines. summit pipeline : real time DQC verified raw product to Garching standard pipeline : instrumental signature removal, catalogue production, astrometric and photometric calibration

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VISTA/WFCAM pipelines

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  1. VISTA/WFCAM pipelines • summitpipeline: real time DQC verified raw product to Garching • standardpipeline: instrumental signature removal, catalogue production, astrometric and photometric calibration • furtherprocessing: generate well sampled PSF, PSF and Sersic profile fitting • advancedpipeline: database driven, deep stacking and mosaicing, merging catalogues, list driven photometry, overlap calibration

  2. tapes disks internet WFAU

  3. Technicalchallenges • non-linearity calibration and measurement • cross-talk between channels and detectors • image persistence from frame-to-frame • sky level variations on short timescales • rapid variability of OH fringing • seeing variations on short timescales • possible time varying flatfield characteristics • calibration and extinction monitoring • data volume and throughput • robust automatic DQC measures

  4. Progress • work package spreadsheets and timelines • instigated regular minuted meetings with actions • provisional ICDs with JAC and WFAU agreed • FITS header definition and test MEF data processed • automated DQC monitoring developed • pipeline monitoring tools with web interface • programming completed for all basic modules • ORAC-DR test routines for UFTI delivered and installed • software module development for standard pipeline on target • good progress with VDFS documentation for PDR

  5. user manuals written for development pipeline/toolkits • Bad pixel monitoring, mask generating, confidence maps • difference imaging software developed • simulations and completeness tests done • prototype list-driven photometry package written and tested • devised general purpose stacking/mosaicing framework • NN stacking algorithm with simple rejection completed • large area mosaicing algorithm developed • automated astrometric and photometric calibration • astrometric and photometric distortion for WFCAM and VISTA quantified

  6. Processingtools/pipelines • INT Wide Field Camera (4 x 2k x 4k) • ESO WFI on 2.2m at La Silla (8 x 2k x4k) • KPNO and CTIO Mosaic1,2 4m (8 x 2k x 4k) • WFI on AAT (8 x 2k x 4k) • CFHT 12k imager (12 x 2k x 4k) • CIRSI mosaic on INT/DuPont (4 x 1k x 1k) • INGRID on WHT (1k x 1k) • UFTI on UKIRT (1k x 1k) • ISAAC on VLT (1k x 1k) ****

  7. CASUtechnicalexpertise • real time analysis and discovery • photometry and photometric system calibration • astrometry and astrometric system calibration • data modelling and simulations • archiving and DB management Sybase, PostgresQL, SQL-Server • data management and processing

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