There are other considerations beside using the Shuttle as a tug boat...
These comments from Goddard Space Flight Center webmaster:.....
"Also, Hubble's pointing and flight systems are contingent upon a specific orbit. It cannot be easily moved and still operate, much less be moved near another large oribiting body.
Hubble definitely cannot be attached to the ISS because it needs to be able to rotate and revolve freely (it often takes exposures that are several hours - imagine try to hold your camera on the same subject for hours while you are running.)
Hubble's view cannot be obstructed. ISS would vibrate too much."
Thanks for the support!
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There are other considerations beside using the Shuttle as a tug boat... These comments from Goddard Space Flight Center webmaster: .....
"Also, Hubble's pointing and flight systems are contingent upon a specific orbit. It cannot be easily moved and still operate, much less be moved near another large oribiting body.
Hubble definitely cannot be attached to the ISS because it needs to be able to rotate and revolve freely (it often takes exposures that are several hours - imagine try to hold your camera on the same subject for hours while you are running.)
Hubble's view cannot be obstructed. ISS would vibrate too much."
Thanks for the support!