Focusing Device: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
m (Dictionary clean-up: identifier → urn:mrn:iala:dic:2-4-0050) |
||
| (2 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
'''2-4- | '''urn:mrn:iala:dic:2-4-0050''' | ||
Alternative term: Focuser (G.B.) | Alternative term: Focuser (G.B.) | ||
| Line 15: | Line 15: | ||
[[Category:Alphabetical Index]] | [[Category:Alphabetical Index]] | ||
[[Category:IALA Dictionary 1970-89 Edition]] | [[Category:IALA Dictionary 1970-89 Edition]] | ||
[[Category:IALA Dictionary 2023 Revision]] | |||
Latest revision as of 08:51, 17 September 2026
Alternative term: Focuser (G.B.)
An optical device used for focusing (2-2-155), for example, a short telescope with cross-wire, fixed to the frame of the optic.
Note: In France and Germany, the type of focusing device mainly used projects, by means of lenses and prisms, an image of the luminous element of the light source on a screen fitted with a cross-wire and usually also with concentric rings.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
