Dear Sir,—Last night, through a break in the clouds, I managed to get my first look with the telescope (an 8-1/2″). I turned it on delta Cygni. The definition was rather fluttering, but a 6-1/2 in. stop enabled me to see it well with 170; the first time I have ever divided this star[2] the colour was obvious. I then tried Pi Aquilæ, which was beautifully divided. I am much pleased with the instrument and its performance, and when I do get a fine night I expect great things from my 8-1/2 in.
Yours truly,
(Signed.)
Mr. G. Calver.
Footnote:
[2] The observer had used an 8-1/2″ reflector, however, for some years.
(Another Letter from the same Gentleman.)
Bolton,