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Published online by Cambridge University Press: 14 August 2015
Multicolor observations of galaxies are being carried out at the prime focus of the 2.6-m Schajn telescope using an image intensifier and 6–9 color filters. The effective wavelengths of the bandpasses used are approximately 3600, 3730, 4400, 4680, 5090, 5280, 6090, 6600 and 7400 Å. The filters for 3730, 5090 and 6600 Å are centered on emission lines.