Catalogue of stars in the Northern Milky Way having H-alpha in emission.

The catalogue contains 4174 stars in the Northern Milky Way, range 32° ≤ l^II< 214°, -10° < b^II < +10°, having the Hα line in emission. The HBH list (main list, Schmidt camera Hamburg-Bergedorf, red plates taken in the years 1964-70) contains 1979 objects partly identical with those in other lists of Hα emission-line stars given in the literature up till 1994. Non-stellar objects (e.g. H II regions, planetary nebulae) have not been included in this catalogue except for those objects containing central stars which have the Hα line in emission, and also for some doubtful cases. In Part 1 the authors give the equatorial (2000.0) and galactic coordinates, the brightness and the spectrum (if existing in the literature), the membership of HBH, the estimation of continuum and Hα-line intensity, the reference to the finding chart in Part 2 and the cross-identification of 100 lists mostly of Hα emission line stars. In Part 2 the authors present the finding charts for more than half of the objects; they have the "normal" orientation and mainly size 7 arcmin square. At the end they give elementary statistics of the present data showing also gaps in the material.