once a week for visits by the general public. 1983 saw the centenary of the observatory, and a commemorative medallion was struck to mark the occasion. The observatory was also opened daily during the winter months to allow visitors the opportunity of looking at the night sky through the telescope. In 1996 the original dome was replaced with a new one, built to original specifications and using original materials. The observatory was closed and the new dome hoisted into position by a large crane. Coats Observatory is currently closed as part of the 'Paisley Museum Re-imagined' project, which will transform the museum into a re-imagined home for the area's outstanding art, science and natural history collections, and is scheduled to reopen in late 2022. Telescopes The original telescope installed in 1883 was a 5-inch refractor made by Thomas Cooke of York. In 1898 a second, larger telescope was installed to operate alongside the original Cooke one. This was a 10-inch Equatorial built by Howard Grubb of Dublin. Both telescopes are still operational and used during the winter viewing nights. Planetarium A planetarium projector was installed in 1994, providing a view of the night sky as it would appear above Paisley on a clear night. The constellations and the position of the planets could be projected on to the roof, giving the illusion of being outdoors observing the movement of the stars. This projector was replaced in 2012 with a digital one which projects the night sky in even greater detail. Scientific Apparatus Coats Observatory was furnished with a wide range of scientific apparatus for observing the night sky and making meteorological records. In 1900 seismic monitoring equipment was installed for recording earthquakes. Coats Observatory was one of the stations across the world which recorded the 1906 San Francisco earthquake. Apart from the two original telescopes the rest of the equipment now makes up the science collections held by Paisley Museum. The collection includes equipment from the leading manufacturers of the day such as telescopes by Troughton & Simms, microscopes by R&J Beck, spectroscopes by Adam Hilger and Howard Grubb and seismometers by R.W. Munro. Weather Recording Thomas Coats had meticulously recorded the weather at his home of Ferguslie House in Paisley since 1858 and gifted the observatory a barometer and thermometer prior to its opening. Additional equipment was added to keep weather records, which were regularly sent to the Met