Letter 1771 Oct 1 [to] Peter Dollond/N. Maskelyne

Made:
1771
maker:
Nevil Maskelyne

[Letter] 1771 Oct 1 [to] Peter Dollond/N. Maskelyne. 3p. on 2 leaves. [Explains with an optical diagram the difficulty encountered by Dollond in obtaining a clear image with a refracting telescope when a red glass [filter] is inserted [for solar observations].

Details

Category:
Archive
Object Number:
1992-227
type:
letter
credit:
Quaritch, B.