Abstract
3FGL J0909.0+2310 is a strong γ-ray source observed with the Fermi satellite. Its position in the sky and it's flux above 10 GeV makes it a good candidate to be observed with HAWC, the next generation of TeV observatories. We make use of the OSIRIS multi-object spectrograph mounted on the 10-m Gran Telescopio Canarias to obtain the redshift of this interesting source.
