Euclid Consortium Euclid CSWG - OUSIM Meeting Barcelona, July 9-10 2012 OU-VIS Patrick Hudelot (IAP) MSSL (London) CASU (Cambridge) CEA (Saclay) University of Edinburgh Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 1 1
OU-SIM for OU-VIS Euclid Consortium - OU-SIM VIS and OU-VIS overview - Who needs OU-SIM VIS products ? - OU-VIS - OU-SHE - What type of outputs should OU-SIM VIS produce ? - Which inputs to produce the OU-SIM VIS simulations ? 2 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 2
OU-SIM : VIS simulators Euclid Consortium 3 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 3
OU-SIM VIS interfaces Euclid Consortium OU-SIM VIS outputs : • Main customers : OU-VIS, OU-SHE (images) • Secondary customers : OU-MER,OU-NIS,OU-SIR (catalogs) OU-SIM VIS inputs : • Science Working groups (catalogs of galaxies, stars) • VIS Instrument (Instrument model parameters) 4 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 4
Standardize the interfaces : The Data Model Euclid Consortium Smooth dataflow at interfaces requires formatting. DATA MODEL NEEDED ! The data model is a catalog of objects along with their type description (example : gain, double float / Simulated PSF, fits image) Two data models : • Data model of OUs objects : Catalog of all objects manipulated by the OU -> OU-SIM may be asked to produce these by-products to bypass some processing step ans test specific sections of the pipeline. -> to which granularity ? -> OU-VIS examples: single science exposure, flatfield exposure. -> Which of these objects requires to be simulated ? • Data model of OU-SIM VIS inputs relevant to the production of OU-SIM VIS outputs -> catalogs of astronomical objects (galaxies, stars) -> catalog of VIS instrument and telescope parameters 5 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 5
OU-VIS pipeline overview Euclid Consortium 6 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 6
OU-VIS : simulations to check the requirements Euclid Consortium • Do we meet the requirements ? • Is the PSF not degraded by the OU-VIS processing ? • The tightest requirements target mainly the PSF degradation through the VIS processing. • The photometric requirements of the VIS channel is not clear. 7 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 7
OU-VIS : simulation and the calibration plan Euclid Consortium Delta-IPRR : Onboard calibration document (MSSL) • Can the OU-VIS algos meet the req when fed with the calibrations from the calibration plan ? • On-bard calibrations : • Bias • CTI,CR model,Cosmetic • Flat Field • Scattered light map • Dense star field (PSF, astrophotometry) • Deep field 8 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 8
OU-VIS : Simulations for OU-SHE ? Euclid Consortium Simulations type What for ? Stars - Isolated stars in subimages - Preliminary tests of the PSF measurement tools - Single wavelength - AOCS, Flatfield, Linearity, CTI effets - Zemax simulation - S/N possible biases - Isolated stars in subimages - PSF measurement and color effects - Euclid filter - Validation of requirements on PSF measurements - Multiple wavelength Zemax sim. - Realistic stellar populations from galaxy models. Objects - Realistic stellar fields - Blending effects - Spatial variations of the PSF on focal plane Galaxies - Isolated galaxies in subimages - Shape measurement tools - Single Wavelength - Isolated galaxies in subimages - Shape and galaxy colors - Realistic Euclid filter Galaxies - Realistic sky simulations - Combine PSF and galaxy shape measurement stars - Investigate blending - Validate object classification methods Galaxies - Sky simulations - Final OU-SHE tests Stars - Lensing : lensing - simple shear map - Realistic shear from CosmoSim 9 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 9
OU-VIS : Simulation needed Euclid Consortium Data types Objects Images Single science exposures Image cubes Sequence of science exposures (full dither, patch) Sequence of science exposures (Deep field sequence) Instrumental calibration exposures (Bias, Flat, Dark, Linearity, Pocket Pump., scattered light) Sky calibration exposures (Dense star fields) Models CTI, linearity and other models from ground commissioning Scalar Telescope housekeeping Ground calibration parameters (gain, saturation, etc … ) Telecope informations (pointing coordinates , …) Many different flavor of images will be needed : - Image size from object thumbnail (PSF, galaxies) to CCD and full FPA. - Images without noise, photon noise, readout noise, PNU, CTI, etc … - Realistic science images - PSF images, galaxy images - Monochromatic image, realistic Euclid transmission 10 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 10
OU-SIM VIS : inputs from SWG Euclid Consortium List of input needed from SWG • realistic catalogs of stars (with SED, brightness) - Model of the galaxy stellar populations - List of SEDs - currently using Besancon galaxy model + BaSeL SEDs • realistic catalogs of galaxies - analytical morphology, photometry, color - data cubes of galaxy images (with wavelength) and ZP - currently using stuff + skymaker tools • lensing input (shear map, amplification matrix for each galaxy, ???) • MICE simulation : Mock catalogs with lensing • Clustering models • Galactic absorption/extinction models • cosmic ray models (Stardust, Planck inputs) • Sky background (zodiacal light) From OU-MER / OU-EXT • List of HST high resolution galaxies 11 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 11
OU-SIM VIS : inputs from VIS-Ins Euclid Consortium List of input needed from VIS Instrument • telescope noise model (thermal, scattered light) • telescope AOCS model • telescope optics (optical design, global transmission) • straylight model • FPA astrometric distortion • FPA geometry (position in x,y,z of the CCDs) • optical PSFs • calibration units design • VIS shutter design • IPQE (Intrapixel quantum efficiency) • detector PSF • CTI • persistence • linearity model (especially at low flux) • saturation behavior 12 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 12
OU-SIM : inputs from EUCLID mission Euclid Consortium 13 Euclid OU-VIS KO Meeting, Paris March 26-27, 2012 Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012 13
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