I still have the challenge of finding out which existing
telescope will be powerful enough - mounted in my observatory, to help
me detect other planetary systems

There is no telescope in existence capable of resolving an extra-solar
planet. The best we can manage at the moment is milli arcsec
resolution. You'd need micro arc sec resolution at least to get the
results you need. You can't do it from within our atmosphere and if
you could you'd need a 100 metre diameter mirror.
Good luck,
jc


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