These simulations can be downloaded from the University of British Columbia from cosmix.astro.ubc.ca/waerbeke/STEPimages/. The input catalogues can also be downloaded from here.

Each simulation set is an ensemble of 64 4096x4096 pixels images. Expect a total of roughly 2e5 galaxies for each set, which allows a shear statistical uncertainty of ~1e-3. Each set has been done with a fixed PSF and fixed shear strength (see details below). There are 6 types of PSF (ranging from psf0 to psf5) and 5 types of shear (lens0 to lens4) so far. In each set, each image is identified with a number ranging from 1 to 64. For a given image number, the galaxies and stars are UNCHANGED (same location, unlensed orientation, mag, profil, etc...) for different PSF and shears.
Any comments/questions: waerbeke[at]phas.ubc.ca

Directory tree:

	galaxy_catalogues
	stars_catalogues
	STEPimages	--->	psf0lens0	--->	STEPimage.1.psf0.lens0.fits
					STEPimage.2.psf0.lens0.fits
					etc...
			psf0lens1	--->	STEPimage.*.psf0.lens1.fits
			psf0lens2
			psf0lens3
			psf0lens4
			psf1lens0
			etc...

galaxy_catalogues:
Contains galaxies for image number 1 to 64. format is:

200 155.598 1954.978 20.3004 0.191 0.252 0.798 84.68 0.704 0.761 79.03 0.61757

bulge: de vaucouleur
disk: exp(-sqrt(x^2+y^2)/rg) cut at 4rg

200	: code
155.598 1954.978	: X and Y
20.3004	: total mag
0.191	: bulge to total flux ratio
0.252	: bulge length scale (arcsec)
0.798	: bulge projected axis ratio
84.68	: bulge position angle
0.704	: disk length scale (arcsec)
0.761	: disk projected axis ratio
79.03	: disk position angle
0.61757	: redshift

stars_catalogues:
Contains all stars, format is:

100 434.089 2588.512 24.7552

100	: code
434.089 2588.512	: X and Y
24.7552	: magnitude

CCD, noise and sky properties:

CCD gain is 2 e-/ADU
Readout noise is 2 e-/ADU
exposure time is 3600 sec.
mag_zero is 26.5
background sky is 19.2 (CFHT site, I band)
pixel scale is 0.206 arcsecs

Telescope pupil (CFHT config):

primary diameter 3.5m
secondary diameter 1m
4 arms 1cm thick (30 degres oriented)

Lensing strengths:
We encourage the blind analysis of these simulations. After you have analysed the simulations, the lensing strengths can be found in the in the STEP simulation report

lens0: e1=? e2=?
lens1: e1=? e2=?
lens2: e1=? e2=?
lens3: e1=? e2=?
lens4: e1=? e2=?

PSF types:

psf0:	seeing=0.9 no anisotropy
psf1:	seeing=0.7 coma in arcsec (0.4 0.3)
psf2:	seeing=0.7 jitter in arcsec (major axis 0.4 minor axis 0.3 angle +30)
psf3:	seeing=0.7 defocusing 0.4 arcsec
psf4:	seeing=0.7 astigmatism in arcsec (0.4 0.3)
psf5:	seeing=0.7 triangular PSF in arcsec (0.4 0.3)

Note that the equivalent seeing for psf1 to 5 is roughly 0.8-0.9 (which is comparable to the image quality in psf0)

SkyMaker stuff configuration file
Download the stuff configuration file here

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