Within the framework of Oja's study of the distribution of stars and interstellar matter perpendicular to the galactic plane, data (narrow-band and broad-band photometry) on the bright stars (V < 6 over the whole sky) and intermediate stars (B < 11.5 in the galactic cap B > 70 deg) have been published earlier. The statistical treatment has been initiated. The main effort has now been for the faint extension. For one of the regions selected, Kapteyn's S.A. No. 80, narrow-band photometry has been obtained from objective-prism plates taken with the Schmidt telescope at Kvistaberg, MtStromlo, and ESO, and broad-band photometry in UBV(RI) has been measured with the Nordic Optical Telescope at La Palma, the 60 cm Cassegrain telescope of the Royal Swedish academy of Sciences at La Palma, and the 40 cm Cassegrain reflector at Kvistaberg.
Oja's work on the extension of the UBV photometry of FK5 stars and HR stars lacking previously published UBV data has been completed. The results have been published.
The annoying problem of the systematic differences in B-V between different sets of measurements of equatorial UBV(RI) standards has been attacked by Oja by means of independent measurements with the 60 cm Cassegrain telescope at La Palma. The measurement of a selection of the equatorial standards together with numerous primary UBV standards shows that Landot's values of B-V are very close to the original UBV system, while those measured from the southern hemisphere and tied-in with the E-region standards show systematic differences. Oja's programme to establish "faint" (7 < V < 10) UBV standards at declinations around +15 deg and +45 deg has been continued. Measurements have been made with the 40 cm telescope at Kvistaberg, the 60 cm telescope at La Palma, and the Nordic Optical Telescope.
E-mail: tarmo.oja@astro.uu.se