Tuesday, 7 July 2009
Thursday July 5, 1894
Mr Maunder having pointed 28in telescope on the Sun to adjust the spectroscope the plane mirror for diagonal view cracked in three pieces.
William Christie, Astronomer Royal
RH says.... This was the half-mirror spectroscope designed by Christie himself - if you click on the 28-inch link above you will see a photograph of Maunder using it.