Beacon Hill Observatory [BHO] (c. 1974- ), Cleethorpes, was established and is run by the Cleethorpes and District Astronomical Society where they hold their regular meetings. The primary telescope is a society-built 16-inch Newtonian/Cassegrain reflector with sketal tube on a fork mount in a domed observatory.
Horncastle Residential College Observatory [HRCO] (1974-2000), Horncastle, established and run by the College. Set-up originally as BAA astronomy weekends – later the Horncastle Astronomy Weekend. The observatory was first equipped with a 160mm reflecting telescope, later upgraded to 30.5-cm reflector. By 2000, due to the state of the building, the dome was dismantled and the telescope stored – Paul Money. Run by Lincolnshire county council the site was sold-off in 2015.
Pennell-Hammerton Observatory [PHO] (1982- ), Lincoln, was established by the Lincoln Astronomical Society. It houses an 12-inch reflecting telescope that was opened by Sir Patrick Mooreand is named after two former Presidents of the society, Walter Pennell and Peter Hammerton.
Lincoln Castle Observatory Tower [LCOT] (1825-?), Lincoln, established by John Merryweather, the prison governor at the castle and keen astronomer . The tower dates from medieval times, but the upper part was restored and buttressed in 1825 as an observatory – the tower was initially built as a watch tower to guard against prisoners escaping (Temple 2013).