Collect images and pretreatment

These observations represent in all more than one hundred of images by supernova coming from 5 different telescopes (CFHT, VLT, NTT, CTIO, WHT).

The images coming from the CFHT were corrected for the quantum effectiveness of CCDs, then défrangées by our care by using charts of fringes and quantum effectiveness built starting from a very great number of images of sciences and sky of twilight (more than one hundred). The quantum chart of effectiveness employed at summer that built starting from the images of sciences and not of the images of twilights. This detail will have a significant implication at the time of the calibration.

The images coming from the other telescopes were provided already corrected by our collaborators of SCP to the LBL figure .

Figure 8.7: Curve of light on the ground of 2001go obtained by simultaneous adjustment of the galaxy and the PSF. Fluxs are expressed in units of flux of the image of the night of better seeing, the axis of times is expressed in Julienne date.

The observations on the ground as well as the lightcurves of all the supernovæ are detailed in the appendix Contents