$\star$ Simulation and performance of the photometry of HuPhot

To test the photometry of HuPhot, we have creates starting from PSFs provided by TinyTim, a simulator of image of Planetary Camera. We took into account in this simulation the basic fluctuations of sky and the noise of reading (typically 50 and 5). Our goal being to validate our programmes of estimate of fluxes and the positions, we did not simulate the problems involved in the transfer of load.

PSFs were placed on a checkerwork on the images, sufficiently spaced to avoid coverings, the positions were drawn randomly around the position chosen on the checkerwork in order to cover the maximum of realization of the sampling of the PSF. to increase the number of events, we simulated on an image of $(50,50)$.

Fluxs as for them were drawn between values from 0 and 10000 photoelectrons (the typical values of fluxes of the supernovæ are between $10\, 000$ photon-electrons.

Lastly, we rebuilt fluxes and the positions of the objects simulated by using the estimate weighed for the position. We rebuilt the flux of two manner: by adjustment of the PSF and aperture.