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 configurations

Info

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
Application number
FR7817650A
Other languages
French (fr)
Other versions
FR2428882B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR7817650A priority Critical patent/FR2428882A1/en
Publication of FR2428882A1 publication Critical patent/FR2428882A1/en
Application granted granted Critical
Publication of FR2428882B1 publication Critical patent/FR2428882B1/fr
Granted legal-status Critical Current

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.
FR7817650A 1978-06-13 1978-06-13 Astronomical constellation display clock - gives exact time and position of celestial configurations Granted FR2428882A1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248866A (en) * 1963-12-10 1966-05-03 Univ Minnesota Inst Of Technol Astronomical clock

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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RT Complete renunciation
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