> What is a reasonable adder to enable the ability to automatically dock and boost Hubble with a second stage using a stock first stage F9? Not really sure. B

> What is a reasonable adder to enable the ability to automatically dock and boost Hubble with a second stage using a stock first stage F9? Not really sure. But honestly, it needs a crewed mission. There's not much point to raising Hubble's orbit without replacing the reaction control wheels. And that'd basically require an EVA.