  We present the nonuniform distribution of temperature and abundance in the
angular extent of 10'(1.4 Mpc) in A1650 observed by XMM-Newton. Spectral
analysis was carried out in 19 systematically-subdivided regions, and in 15
specified regions referred to the hardness ratio (HR) map. The value of HR,
defined as the ratio of counts in the 1.6-10 keV band to those in the 0.8-1.6
keV, is an indicator to investigate the spatial variation of spectral features.
The temperature and abundance were obtained to be 4-6 keV and 0.2-0.5 solar
value with average values of 5.62+0.05-0.07 keV and 0.36+0.02-0.01 solar value
within a radius of 5', respectively. The redshift was derived to be
8.01+0.02-0.02x10^-2 against an optical value of 8.45x10^-2. It turned out that
cool regions with a temperature of around 4 keV and a scalelength of a few 100
kpc are patchily distributed in the outer envelope. This temperature structure
could be explained by the infalling of groups of galaxies into the cluster main
body. More than 30 point sources were found around A1650 in the FOV of 30'. The
spectrum of the Galactic diffuse emission was obtained in the outskirts of
A1650.
