| RefNo | MS/957/87 |
| Level | Item |
| Title | Letter from G B [George Biddell] Airy, 30 Woburn Place, to Captain [Henry] Kater |
| Creator | Airy; Sir George Biddell (1801-1892); British astronomer |
| Date | 13 April 1828 |
| Description | He has considered the eyepiece that Kater mentioned - two glass hemispheres with the convex sides in contact - giving his opinion on its performance, which he considered in his paper 'On the spherical aberration of eyepieces'. He thinks that a better eyepiece might be made by arranging two similar lenses of equal focal length, radii 6 to 1, with the more convex surface in contact, giving a sketch to illustrate this. If Kater is disposed to try different eyepieces, Airy would be glad to hear the result of such a combination. |
| Extent | 4p. [p.4 blank] |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| Dimensions | 182x114mm. |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA8035 | Airy; Sir; George Biddell (1801 - 1892); astronomer and mathematician | 1801 - 1892 |