The azimuth range is limited to about one hour by the supporting walls that flank the tube on its eastern and western sides.

This beam is connected to the eastern supporting wall, where it can move on a circular iron arc to allow the telescope to change altitude.

From 1874 to 1878, J. L. E. Dreyer worked with the telescope and began the compilation of his New General Catalogue of Nebulae and Clusters of Stars.

[2] Following a TV programme, lecture, and book by Patrick Moore, there was renewed interest in the six-foot telescope in the 1970s.

In 1994 the retired structural engineer and amateur astronomer Michael Tubridy was called in to research and re-design the Rosse six-foot telescope.

The original plans were lost, and so it took detective work to review the remains of the telescope, incidental comments in observing logs, and contemporary photographs taken by Mary Rosse, wife of the 3rd Earl.

It had been planned to include a working mirror, but due to budget constraints this had to be left for a separate project.

[7] The Birr Castle station consists of 96 LBAs and 96 HBAs and a total of 96 digital Receiver Units (RCUs).

[9] In 2018, I-LOFAR observed for the first time a billion-year-old red-dwarf, flare star, namely CN Leo (Wolf 359), 7.9 light years away.