The intermediate age open cluster NGC 2660
The intermediate age open cluster NGC 2660
We present CCD UBVI photometry of the intermediate old open cluster NGC 2660, covering from the red giant region to about seven magnitudes below the main sequence turn-off. Using the synthetic colour-magnitude diagram method, we estimate in a self-consistent way values for distance modulus [(m−Ṁ0≃12.2], reddening [E(B−V)≃0.40], metallicity ([Fe/H] about …