Westerlund 2 is very easy to find. Some cartes, like CDC, doesn't show it as individual object. They include it with the nebula NGC 3247.
See the image
HERE.
These YMC (Young Massive Cluster - better name than Super Stars Cluster) were identified in 1961, by Westerlund. He didn't understand well them, because they have different and specific behaviors. And they are under strong influence of Interestelar Extintion.
Only latter these objects received the attention they deserve.
To find Westerlund 1 is more hard. You can use the star HD 151018 as shown in
http://www.astrobin.com/121197/ or position your telescope around RA 16 47 DEC 45 50. It is very faint and very red. Be sure that your mount is well aligned with south pole if you use the RA and Dec information. You will loose easily the object with little errors of positioning. I know it ! I did it !
Some messages here about these objects, with excellent informations.
Images > Deep Space > NGC3247 comparison in Ha and NIR:
http://www.iceinspace.com.au/forum/s...ght=Westerlund
General Astronomy > Astronomy and Amateur Science > Here we go again . . . :
http://www.iceinspace.com.au/forum/s...ght=Westerlund
General Astronomy > Observational and Visual Astronomy > Observation Reports > Westerlund 2 :
http://www.iceinspace.com.au/forum/s...ght=Westerlund
General Astronomy > Observational and Visual Astronomy > Westerlund 1: From blobular to globular in 100 million years :
http://www.iceinspace.com.au/forum/s...ght=Westerlund
General Astronomy > Astronomy and Amateur Science > Massive clusters Westerlund 1 & 2 - hot pix!! :
http://www.iceinspace.com.au/forum/s...ght=Westerlund
... and many others messages.