Survey Strategy

The J-PLUS survey is divided in two parts, one “shallow” aimed at providing the calibration for J-PAS and one “deep” aimed at providing an unprecedented study of star forming galaxies in the local Universe.

The exposure times vary depending on the distance and phase of the Moon.

The expected limiting magnitude for the different filters, assuming S/N ~ 3, an aperture of 2.4arsec, a psf of 1.2arcsec and a grey night, are listed in the following table:

Filter Limiting Magnitude
uJAVA 21,5
J0378 21,5
J0395 21,5
J0410 21,5
J0430 21,5
gSDSS 23,2
J0515 21,5
rSDSS 23,2
J0660 21,5
iSDSS 21,5
J0816 21,5
zSDSS 20,5

The filters gSDSS, rSDSS, and iSDSS will be observed four times (three dithered exposures per time), separated by one week to study variability.

The goal of the J-PLUS deep is to achieve S/N~3 for a 2.4 arcsec aperture, assuming an average 1.2 arcsec seeing at the magnitudes shown in the following list.

The deep part of J-PLUS will focus on:

Filter Limiting Magnitude
uJAVA 23
J0378 22,5
J0660 22,5
zSDSS 21,1