a Solar telescope is one, also a Coronagraph which is used to in
a sense make an artificial eclipse in the observatory. The
Coronagraph was invented in l93l by a French Astronomer. I saw two
of them once in a museum in Philadelphia in the seventies, oddly
they were in a temporary exhibit with weather instruments, ok,
solar energy is part of weather, I am sure. They had telescopes
with the necessary light-reduction filter ,opunted on shouder
stocks rather like Mannlicher rifles, these were full-length
shoulder stocks, the Coronagraph was the (barrel) I seemed to think
they had a trigger group also, possiblky these had a camera
attachment The astronomer"s name was Bernard Lyot prounounced (Leo)
like the Lion constellation. Dop not confuse with chronograph which
is a type of watch, Many do confuse the two, Corona meaning Crown,
part of the Solar structure normally invisible except during an
eclipse. Obvosy there are serious eye-safety concerns here
requiring special light-attenuation to bring down the solar light
to a safe level. I wish I had more information on this unusual
instrument which was aimed directly at the sun with a shoulder
stock.l