SIMBAD references

We present new photometric and spectroscopic data of the old open cluster Czernik 30. Wide field BVI photometry allows us to correct for the high field contamination by statistical subtraction to produce a color-magnitude diagram (CMD) that clearly reveals the cluster sequence. From spectra of stars in the cluster field obtained with the Hydra spectrograph on the Wisconsin-Indiana-Yale-NOAO 3.5 m telescope we determine a mean cluster velocity of +79.9±1.5 km/s and provide membership information that helps further define the cluster giant branch and red clump. Stellar abundances for the brighter giants in the cluster indicate a mean metallicity of [Fe/H] = -0.2±0.15. Fitting theoretical isochrones to the CMD we determine the following properties of Czernik 30: age = 2.8±0.3 Gyr, (m - M)_v= 14.8±0.1, E(B - V) = 0.24±0.06, and E(V - I) = 0.36±0.04. Czernik 30 is an old, sub-solar metallicity cluster located at a Galactocentric radius of R_gc∼ 13.3 kpc. Given its age and position just beyond the transition to a flat abundance gradient seen in the open cluster population, Czernik 30 provides an interesting target for future observations.