The old open clusters Berkeley 36, Berkeley 73 and Biurakan 13 (Berkeley 34)
1
Università di Padova, Dipartimento di Astronomia, Vicolo dell'Osservatorio 2, 35122 Padova, Italy e-mail: ortolani@pd.astro.it
2
Universidade Federal do Rio Grande do Sul, Departamento de Astronomia, CP 15051, Porto Alegre 91501-970, Brazil e-mail: bica@if.ufrgs.br
3
Universidade de São Paulo, IAG, Rua do Matão 1226, Cidade Universitária, São Paulo 05508-900, Brazil e-mail: barbuy@astro.iag.usp.br
4
Universidad Catolica de Chile, Department of Astronomy & Astrophysics, Casilla 306, Santiago 22, Chile e-mail: mzoccali@astro.puc.cl
The coordinates of Berkeley 73 typed in the paper are wrong. The
correct ones are J2000 
,
, 
.
The coordinates in the Galaxy were revised to 
kpc, 
kpc,
kpc, and the distance from the Galactic center 
kpc.
We confirm that the cluster images and colour-magnitude diagrams
shown in the paper are indeed from Berkeley 73.
Key words: Galaxy: open clusters and associations: individual: Berkeley 36, Berkeley 73, Biurakan 13 / HR diagram / errata, addenda
© ESO, 2005