An Improved Type of Schmidt Camera
| Autor: | Dorothy G. Hawkins, E. H. Linfoot |
|---|---|
| Rok vydání: | 1945 |
| Předmět: | |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 105:334-344 |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/105.6.334 |
| Popis: | As has been mentioned in Nature1, D. D. Maksutov has shown that the aspheric plate of an f/2.5 or f/3 Schmidt camera of aperture2 not exceeding two or three feet can be replaced by a simple meniscus lens, the spherical surfaces of which are nearly concentric with the mirror surface. Maksutov pointed out that a system with a strictly concentric meniscus is feasible provided that a certain amount of primary chromatism can be tolerated, and that such a system has the valuable property of giving uniform definition throughout its curved field. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|