Hoober Observatory

The observatory consists of a 5 m square building topped by a 5-metre diameter dome. The observatory was built by the members between 1991 and 1993. Originally the dome was only 4 m in diameter. In 1999 a major refurbishment of the observatory was completed including a new 5-metre diameter dome, which was designed & built by the members over the preceding 3–4 years. The observatory was extended in 2018 by adding a 5-metre square extension (public room). The building also underwent extensive refurbishment inside and outside to create a toilet and improve facilities for disabled visitors.

The society opens the observatory to the public for evening viewing sessions during the winter months, for Solar observing on Sunday afternoons during the summer and for astronomical events e.g. meteor showers or lunar eclipses. The observatory, located off Lea Brook Lane in Rotherham, South Yorkshire, is thirty minutes' drive from central Rotherham, is one hours' drive from central Barnsley and one hours' drive from central Doncaster.