> The narrow band only pass is no problem, but the second/third pass will be > difficult. First it will require three passes to correlate all 16 BBCs. We > can not mix bandwidths, so the 0.25Mhz channels will be a separate pass > and we can only correlate a maximum of 8 BBCs per pass, so the remaining > 12 BBCs will require two more passes. These can be split up as you wish, > eg 4/8 or 6/6 or whatever. The real problem is omitting your target from > these passes. This will require a great deal of very time consuming hand > editing and for each of these three passes. Is it really necessary to omit > the target from correlation? Couldn't it be easily flagged in Aips? You can correlate the target in the wide-bandwidth runs as well. I was just indicating that that portion of the correlation could be omitted if it would save correlator time, which apparently it won't. I'm fine with either 4/8 or 6/6 on the two runs of the wide-bandwidth correlation. From your perspective, 6/6 may be preferable if it reduces the amount of media required for distribution. Vincent