To study the nuclear reactions at relevant astrophysical energies, stable ion beams and low-background environments are required. The Felsenkeller underground laboratory in Dresden hosts a 5 MV Pelletron ion accelerator with an external sputter ion source (for 12C and other beams) and an internal radio-frequency ion source able to provide hydrogen and alpha beams. The seminar will give an overview of the Felsenkeller laboratory and discuss the ongoing 3He(4He,γ)7Be reaction and the 2H(p,γ)3He reaction planned for the next year.