Dear DRH folks,

Please find here:

  http://fizeau.unice.fr/~marcel/TestCaseDRH/

the data set evoked in David's message and the routine (see PS-1 at the end of this message) requested in Laurent's message.

The parameters used for this IRDIS/DBI simulation are the one detailed in previously distributed David's document "Definition of a test case for data analysis", with the optional choice of a 4-lambda/D apodized Lyot coronagraph.

Hereafter I consider two cases:

1- If your need concerns the diffractive data only (on-axis normalized PSF in two bands (star) + off-axis normalized PSF in two bands (planet)), you only have to download the data file "TestCaseOutputs.tgz", untar/unzip it ("tar -xvfz TestCaseOutputs.tgz") and read the resulting 72 files with the IDL command "restore". Each file contains a structure called "images" where:

;    corotag   = on-axis PSFs(dim, dim, filter#1 or filter#2, star#1 or star#2)
;    airytag   = off-axis PSF(dim, dim, one-only separation, filter#1 or filter#2)
;    resolution= pixel size [arcsec/px]
;    lambda    = the two wavelengths [m]
;    width     = the two spectral widths [m]
;    instrument= SPHERE instrument ('IRDIS' here)
;    plan_sep  = off-axis separation used for simulation ["]
;    filename  = name of the file in which this structure was saved

The relevant tags are hence "corotag" for the on-axis data (star post-coronagraph PSF for the two bands and for observation#1 and observation#2), and airytag for the off-axis data (planet PSF for the two bands). The total number of short-exposure data is 144 consecutive observations in the two considered bands (H2 and H3 - see David's documents for more details).

2- If you also need the routine that will permit you to generate star+planet data in the proper way (RECOMMENDED!), following the actual SPHERE/IRDIS characteristics and the actual field-rotation corresponding to the case simulated here, you have to:

a- have the CAOS system and the Soft.Pack.SPHERE installed
b- download both the directory file "TestCaseDRH.zip" and the IDL routine file "pfb_red_ird_rot.TestCaseDRH.pro"
c- unzip the directory in your CAOS/SPHERE working directory ("unzip TestCaseDRH.zip"), in sub-directory "Projects", as any other simulation project
d- put the routine file in the directory .../SPHERE_Software_Package_2.0/pack_lib/data-reduction/ (or elsewhere, it does not really matters)
e- launch IDL and CAOS and then the routine


All the best,   -Marcel.


PS-1: this routine is an adaptation of the already existing and distributed routine pfb_red_ird_rot.pro (as a part of the Soft.Pack.SPHERE, v.2+, found in .../pack_lib/data-reduction/). The main parameter you may need to play with is "temperature" (found at line 97 of the routine), the index giving the temperature of the companion planet (and hence directly varying the intensity ratio with the star).

PS-2: these instructions are reported in the downloadable text file "TestCaseDRH.ReadMe.txt".


Le 21 juil. 08 à 12:20, Laurent MUGNIER a écrit :
Hello all,
If possible, when you release the data set (noiseless unit-flux star images and planet image??), please include the small script to produce the set of images with both star and planet in photo-electrons at their respective fluxes and positions.
Alberto is eagerly waiting for these data (-;
Best regards,
      Laurent

David Mouillet a écrit :
Anthony and Marcel,
from what I understood of our previous discussion, a complete data set has been produced to the purpose of data analysis tests (making possible tests of slow speckle parttern evolution, test on various schemes of image combination etc...). this first set is noiseless and without companion but it could make possible already significant tests.
maybe I missed sth but I guess this data set is not really widely made available (a last cross-check and validation was to be done between you).
if ready and validated, could you please make the data set available (on bscw or elsewhere) , together with needed info, and let everyone know about it ?
thanks
d

-- 

____________________________________________________________________
Laurent MUGNIER  --  ONERA / Dept Optique Theorique & Appliquee / CC
BP 72,  92322  Chatillon  cedex,  France. | Tel: 33 (0)1 46 73 47 47
http://laurent.mugnier.free.fr .......... | Fax: 33 (0)1 46 73 41 71
____________________________________________________________________

* * *
Marcel Carbillet
marcel.carbillet@unice.fr