HST operations are controlled by the Space Telescope Science Institute on the Johns Hopkins campus in Columbia, MD. Observation time is requested and approved by STSI, and is given primarily to scientists who belong to the countries involved in HST's funding and construction.
Small amounts of time (donated by the STSI Director as part of his own discretionary use) has been allocated for amateur astronomers as well, though they still must present a proposal for consideration/scheduling like everyone else.
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No, the Hubble Space Telescope (HST) is currently experiencing technical difficulties after a problem with its payload computer. NASA is working to resolve the issue and bring HST back online.
The Hubble Space Telescope (HST) was launched on April 24, 1990, aboard the Space Shuttle Discovery.
Not rent per se, but civilians can request and be granted observation time, though it's very limited. Most HST observation time is granted in advance to Astrophysics and Astronomy teams based on submitted proposals, as well as their association with countries that helped build and maintain HST. However, the Space Telescope Science Institute (the unit that controls HST and its observations here in Maryland at Johns Hopkins) Director has 10% of "Director's Discretionary (DD) allocation time" for HST observations. The Director on occasion does grant use to civilians, though they must go through the same submission procedure as any scientist would, and any submission must clearly justify use of HST. Using it to observe women on the beach in Maui is not considered justifiable use. Besides, that's what submarine periscopes are for. You can read more about it at the link below.
HST's primary mirror is 3 meters, or 118.110 inches.
HST has been in continuous orbit since it was deployed in 1990.