Berkeley 39

Number of stars per data source

	Reference   22 :  818 stars
	Reference  152 : 3180 stars

References

 22

Kaluzny J., Richtler T.

(1989) Acta Astron. 39, 139

CCD BV photometry of the old open cluster Berkeley 39

1989AcA....39..139K

 152

Kassis M., Janes K.A., Friel E.D., Phelps R.L.

(1997) Astron. J. 113, 1723

Deep CCD photometry of old open clusters

1997AJ....113.1723K