SWIRE AB corrections
From NYU CCPP Wiki
Here are the SWIRE AB corrections to apply (in SM format) to get from the SWIRE system to AB.
set ap_m_u = ap_m_u + 0.728 # This is not SDSS u set ap_m_g = ap_m_g - 0.096 set ap_m_r = ap_m_r + 0.159 set ap_m_i = ap_m_i + 0.392 set ap_m_z = ap_m_z + 0.552
