Euclid Consortium Euclid CSWG - OUSIM Meeting Barcelona, July - - PowerPoint PPT Presentation

▶
euclid consortium euclid cswg ousim meeting barcelona
SMART_READER_LITE
LIVE PREVIEW

Euclid Consortium Euclid CSWG - OUSIM Meeting Barcelona, July - - PowerPoint PPT Presentation

Sep 29, 2022 285 likes •419 views

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

slide-1
SLIDE 1

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

Euclid Consortium

1

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

Euclid CSWG - OUSIM Meeting

Barcelona, July 9-10 2012

OU-VIS

Patrick Hudelot (IAP) MSSL (London) CASU (Cambridge) CEA (Saclay) University of Edinburgh

1

slide-2
SLIDE 2

Euclid Consortium

OU-SIM for OU-VIS

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

2

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

  • 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

slide-3
SLIDE 3

Euclid Consortium

OU-SIM : VIS simulators

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

3

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

3

slide-4
SLIDE 4

Euclid Consortium

OU-SIM VIS interfaces

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

4

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

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

slide-5
SLIDE 5

Euclid Consortium

Standardize the interfaces : The Data Model

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

5

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

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

slide-6
SLIDE 6

Euclid Consortium

OU-VIS pipeline overview

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

6

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

6

slide-7
SLIDE 7

Euclid Consortium

OU-VIS : simulations to check the requirements

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

7

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

  • 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
  • f the VIS channel is not clear.

7

slide-8
SLIDE 8

Euclid Consortium

OU-VIS : simulation and the calibration plan

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

8

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

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

slide-9
SLIDE 9

Euclid Consortium

OU-VIS : Simulations for OU-SHE ?

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

9

Simulations type What for ?

Stars

  • Isolated stars in subimages
  • Single wavelength
  • Zemax simulation
  • Preliminary tests of the PSF measurement tools
  • AOCS, Flatfield, Linearity, CTI effets
  • S/N possible biases
  • Isolated stars in subimages
  • Euclid filter
  • Multiple wavelength Zemax sim.
  • Realistic stellar populations from

galaxy models. Objects

  • PSF measurement and color effects
  • Validation of requirements on PSF measurements
  • Realistic stellar fields
  • Blending effects
  • Spatial variations of the PSF on focal plane

Galaxies

  • Isolated galaxies in subimages
  • Single Wavelength
  • Shape measurement tools
  • Isolated galaxies in subimages
  • Realistic Euclid filter
  • Shape and galaxy colors

Galaxies stars

  • Realistic sky simulations
  • Combine PSF and galaxy shape measurement
  • Investigate blending
  • Validate object classification methods

Galaxies Stars lensing

  • Sky simulations
  • Lensing :
  • simple shear map
  • Realistic shear from CosmoSim
  • Final OU-SHE tests

9

slide-10
SLIDE 10

Euclid Consortium

OU-VIS : Simulation needed

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

10

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

Data types Objects Images Image cubes Single science exposures 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

slide-11
SLIDE 11

Euclid Consortium

OU-SIM VIS : inputs from SWG

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

11

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

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

slide-12
SLIDE 12

Euclid Consortium

OU-SIM VIS : inputs from VIS-Ins

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

12

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

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)
  • ptical PSFs
  • calibration units design
  • VIS shutter design
  • IPQE (Intrapixel quantum efficiency)
  • detector PSF
  • CTI
  • persistence
  • linearity model (especially at low flux)
  • saturation behavior

12

slide-13
SLIDE 13

Euclid Consortium

OU-SIM : inputs from EUCLID mission

Euclid OU-VIS KO Meeting, Paris March 26-27, 2012

13

Euclid CSWG - OUSIM Meeting, Barcelona July 9-10, 2012

13