If money really is no object all the potential suggestions are complete 'Mickey Mouse"
If astronomy is your real and only desire first requirement is a country estate at a truly dark site ($500000 should cover it).
Next a 5 metre domed observatory ($50000 at a guess)
Next a solid pier to mount a "real" telescope and some mechanical devices for lifting etc. ($5000 should cover it)
Now a suitable telescope can be had starting at $150000 to the sky's the limit.
I am retired with a permanent indexed pension and assets probably worth $1000000 (house in a wanted city area) could probably do this If astronomy was my only interest and I expect many others could meet these basic requirements.
Oh! Unless the SWMBO is in full agreement get rid of her first (that will cost half your assets)
Barry