Gas discharge hydrogen DVS-25 lamp is frequently used as a source of continuous spectrum in the range of 190-360 nm as well as a radiator of hydrogen atomic and molecular lines in the longer-wave region of the spectrum. The striped spectrum of molecular hydrogen has several thousand of H 2 lines in the range of 330-1100 nm that can be resolved by the different spectral line devices. In the specified range, the DVS-25 lamp can be used as a source of the spectrum with a very high density of lines, and it can effectively be used for the calibration of spectral scales of spectrographs equipped with photoelectronic cassettes on linear charge coupled devices. In our work, the spectrum measurement of the DVS-25 lamp was performed in the range of 330-1100 nm using the spectrograph PGS-2 (dispersion of 0.73 nm/mm) equipped with a photoelectronic cassette on 6 linear charge coupled devices. For the spectrum in the above specified range, an atlas of the DVS-25 spectrum was created. The wavelengths of H and H 2 lines registered in the DVS-25 spectrum with a value of s/n exceeding 5 were added to the database of spectral lines of the atlas. The number of lines in this atlas exceeds 2600. The density of H 2 lines emitted by the DVS-25 in the range of 450-1000 nm is significantly higher than the density of Fe and Ne lines in the emission of LT-3 lamp with a hollow cathode. A large number of lines in the DVS-25 emission allows very accurately calibrate a small desired area of the spectrum in typical mini-spectrometers designed to measure the wavelength of laser diode sources with a precision better than 0.001 nm. Key words: charge-coupled devices, spectrographs, the spectrum of the atlas, photoelectron cassette, hydrogen gas discharge lamp DOI: http://dx.doi.org/10.15826/analitika.2017.21.2.003 E.G. Silkis 1 , A.S. Stankevich 1 , A.V. Shonenkov 2 1 Institute of Spectroscopy, of the Russian Academy of Sciences, Fizicheskaya ul., 5, Troitsk, Moscow; 108840, Russian Federation 2 Joint Institute for High Temperatures , of the Russian Academy of Sciences, ul. Izhorskaya, 13, structure 2, Moscow , 125412, Russian Federation