FR2428882A1 - Astronomical constellation display clock - gives exact time and position of celestial configurations - Google Patents
Astronomical constellation display clock - gives exact time and position of celestial configurationsInfo
- Publication number
- FR2428882A1 FR2428882A1 FR7817650A FR7817650A FR2428882A1 FR 2428882 A1 FR2428882 A1 FR 2428882A1 FR 7817650 A FR7817650 A FR 7817650A FR 7817650 A FR7817650 A FR 7817650A FR 2428882 A1 FR2428882 A1 FR 2428882A1
- Authority
- FR
- France
- Prior art keywords
- configurations
- celestial
- minutes
- time
- correction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B27/00—Planetaria; Globes
- G09B27/04—Star maps
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Instructional Devices (AREA)
Abstract
The indicator gives the time in hours and minutes for positions of stars or celestial configurations for any hour of the day and any day of the year. star configurations on the indicator are driven by rotation of an hour disc which rotates one revolution in 24 hours. The disc also carries an horizon line. The system has also device for correction of reading accuracy. It has also a large diameter gear wheel which rotates through one revolution in a year. Small rocker mechanisms correct the primary error of the mechanism once every six months. the error is 12 minutes of sidereal time each time. Another correction takes place once every four years to correct the secondary error of the mechanism. This correction also resets the heavens to its initial position thus erasing the 12 minutes sidereal time accumulated during the preceding years.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7817650A FR2428882A1 (en) | 1978-06-13 | 1978-06-13 | Astronomical constellation display clock - gives exact time and position of celestial configurations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7817650A FR2428882A1 (en) | 1978-06-13 | 1978-06-13 | Astronomical constellation display clock - gives exact time and position of celestial configurations |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2428882A1 true FR2428882A1 (en) | 1980-01-11 |
FR2428882B1 FR2428882B1 (en) | 1981-07-17 |
Family
ID=9209439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7817650A Granted FR2428882A1 (en) | 1978-06-13 | 1978-06-13 | Astronomical constellation display clock - gives exact time and position of celestial configurations |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2428882A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2586829A1 (en) * | 1985-09-05 | 1987-03-06 | Vuarnesson Bernard | Apparatus for observing a celestial chart |
FR2600429A1 (en) * | 1986-06-19 | 1987-12-24 | Chaloin Serge | Device for recognising and identifying stars and constellations |
FR2675611A1 (en) * | 1991-04-16 | 1992-10-23 | Carde Robert | Motorised and luminous chart of the sky, allowing the permanent positioning of the moon and of the five planets visible to the naked eye |
EP0997863A2 (en) * | 1998-10-13 | 2000-05-03 | GAMES CENTRE s.a.s. di RIZZO Giancarlo & c. | Improved motorised device for automatically spotting the visible portion of the sky |
CN106773592A (en) * | 2017-01-23 | 2017-05-31 | 飞亚达(集团)股份有限公司 | A kind of planetary gear system and wrist-watch |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3248866A (en) * | 1963-12-10 | 1966-05-03 | Univ Minnesota Inst Of Technol | Astronomical clock |
-
1978
- 1978-06-13 FR FR7817650A patent/FR2428882A1/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3248866A (en) * | 1963-12-10 | 1966-05-03 | Univ Minnesota Inst Of Technol | Astronomical clock |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2586829A1 (en) * | 1985-09-05 | 1987-03-06 | Vuarnesson Bernard | Apparatus for observing a celestial chart |
FR2600429A1 (en) * | 1986-06-19 | 1987-12-24 | Chaloin Serge | Device for recognising and identifying stars and constellations |
FR2675611A1 (en) * | 1991-04-16 | 1992-10-23 | Carde Robert | Motorised and luminous chart of the sky, allowing the permanent positioning of the moon and of the five planets visible to the naked eye |
EP0997863A2 (en) * | 1998-10-13 | 2000-05-03 | GAMES CENTRE s.a.s. di RIZZO Giancarlo & c. | Improved motorised device for automatically spotting the visible portion of the sky |
EP0997863A3 (en) * | 1998-10-13 | 2003-02-05 | GAMES CENTRE s.a.s. di RIZZO Giancarlo & c. | Improved motorised device for automatically spotting the visible portion of the sky |
CN106773592A (en) * | 2017-01-23 | 2017-05-31 | 飞亚达(集团)股份有限公司 | A kind of planetary gear system and wrist-watch |
CN106773592B (en) * | 2017-01-23 | 2022-03-25 | 飞亚达(集团)股份有限公司 | Planetary gear system and watch |
Also Published As
Publication number | Publication date |
---|---|
FR2428882B1 (en) | 1981-07-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse | ||
RC | Opposition against decision of lapse | ||
DA | Annulment of decision of lapse | ||
RT | Complete renunciation | ||
ST | Notification of lapse |