> > > it up. I haven't managed to find a decent object yet, but you could try > > > ngc1068 (the lack of units matching stops useful comparisons). On the question of SEDs, you have to be careful to compare like with like. Apart from 3C273, I think the list presented last week are all extended sources, so just using the name isn't adequate, co-ordinates are preferable, but what about long-slit spectra... A tricky VO problem barely mentioned at the VOTech meeting. Malcolm