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Results of follow-up spectroscopy

In total 217 candidates were observed during the January - June, 1995, of which 34 objects were observed with the 6m telescope, 183 objects with the Calar Alto 2.2m telescope, and 4 with both instruments. Due to the schedule of the observations almost all candidates are located in the region $\alpha = 12^h - 17^h$and $\delta = +45^\circ - +50^\circ$. We find 59 new emission line galaxies, 4 quasars and 7 galaxies with absorption lines. For 11 of the known ELGs we measure emission line ratios and make quantitative classification. The remaining objects are stars or they have featureless spectra with signal-to-noise ratios insufficient to detect weak lines. The overall detection efficiency of emission-line objects (calculated after exclusion of 11 known ELGs) is rather low for this first sample, (63/206 or 30.6 %). This is especially true when compared with the efficiency from Popescu et al. ([1997]) of about 76 %, for the same photographic plates. Nevertheless, we will improve on it by including additional selection criteria, as will be discussed in Section 5.3.