This catalogue is based on the one presented in 
<a HREF="../Clusters/cepheus-ob3.html">Pozzo et al (2003
MNRAS 341 805)</a> and 
<a HREF="../P2001/mp_thesis.pdf">Pozzo (2001; PhD Thesis)</a>, with 
two significant changes.
<br>
<br>
1) The formatting now conforms to our normal 
<a href="../format.html">cluster format</a>.  However,
since "a" and "b" would not fit within that format, the CCDs are
referred to by their numbers, 2 and 4 respectively.
<br>
<br>
2) The astrometry has been improved.  It is carried out as described in
<a HREF="../Clusters/cepheus-ob3.html">Pozzo et al (2003)</a> but now entirely with respect to the 2MASS
catalogue.  The resulting fits have RMS residuals of about 0.09
arcseconds, which is a significant improvement on the 0.35-0.53 when
we used USNO-A2 reported in 
<a HREF="../Clusters/cepheus-ob3.html">Pozzo et al.</a>  Furthermore the systematic
residuals reported in 
<a HREF="../P2001/mp_thesis.pdf">Pozzo (2001)</a> are no longer
present.  
Note that we have not attempted to join the two CCDs into a virtual mosaic.