Abstract
OTELO (OSIRIS Tunable Emission Line Object survey) is a project aimed at studying the low end luminosity function of emission line galaxies. A broad band survey at B ≈ 24 magnitudes detection level will also be performed for a field of view of about 14 square degrees corresponding to the lowest selected redshift (z = 0.08). This huge amount of data will contain invaluable information about the stellar content of a deep portion of our own Galaxy. In this contribution we revise different Galactic projects in which these data could provide new and important insights into classical and new Galactic questions.