Frames per second capabilities cameras currently installed in Modern Telescopes? What are the present real-time capabilities of various modern telescopes as video cameras?  How do these compare with the capabilities various of space telescopes?

For example, if it was known that there would soon be a Saturn-comet impact (akin to the Shoe-Maker levy impact into Jupiter), what would the "frames per second" of the captured imagery be, regardless of imaging resolution?

Video of the Shoemaker-Levy impact: https://youtu.be/p7RP2SW_gSw?t=92.  Is this video presented in real time?

Animation of the Shoemaker-Levy impact: 

https://en.wikipedia.org/wiki/Comet_Shoemaker%E2%80%93Levy_9#/media/File:Max_Planck_Institute_Shoemaker%E2%80%93Levy_9.gif

Live Streaming Jupiter (from Earth):

https://www.youtube.com/watch?v=ILh4lWHi_ag

Shoemaker-Levy image:

https://en.wikipedia.org/wiki/Comet_Shoemaker%E2%80%93Levy_9

ISS Live Stream [for comparison]:

https://www.youtube.com/watch?v=EEIk7gwjgIM
The types of sensors that are used for "Lucky Imaging" can work at frame rates easily capable of sampling changes in the speckle pattern due to turbulence in the atmosphere; 50 Hz is certainly possible.

The detectors used are electron-multiplying CCDs and are available on a number of telescopes around the world.

A video camera can of course be put at the focus of any ground-based telescope.

Such devices are not usually put on space telescopes because they have no need to deal with a turbulent atmosphere. Space telescopes are usually concerned with taking pictures of very faint objects, where minimising the readout noise of the device (to a few electrons) is a priority, and necessitates longer readout times - often tens of seconds.