Open clusters in the third Galactic quadrant : II. The intermediate age open clusters NGC 2425 and NGC 2635

) photometric data obtained in the fields of the poorly studiedopen clusters NGC 2425 and NGC 2635. Both clusters are found to be of intermediate age thus increasing thepopulation of open clusters known to be of the age of, or older than, the Hyades. More explicitly, we find thatNGC 2425 is a 2.2 Gyr old cluster, probably of solar metallicity, located at 3.5 kpc from the Sun. NGC 2635 isa Hyades age (600 Myr) cluster located at a distance of 4.0 kpc from the Sun. Its Colour Magnitude Diagramreveals that it is extremely metal poor for its age and position, thus making it a very interesting object in thecontext of Galactic Disk chemical evolution models.Key words. Galaxy: open clusters and associations: individual: NGC 2425 – open clusters and associations:individual: NGC 2635