FR3015695B1 - METHOD AND DEVICE FOR REAL-TIME CORRECTION OF THE DEFOCATION OF A SPATIAL TELESCOPE, TELESCOPE AND SATELLITE COMPRISING SUCH A CORRECTION DEVICE - Google Patents

METHOD AND DEVICE FOR REAL-TIME CORRECTION OF THE DEFOCATION OF A SPATIAL TELESCOPE, TELESCOPE AND SATELLITE COMPRISING SUCH A CORRECTION DEVICE

Info

Publication number
FR3015695B1
FR3015695B1 FR1303025A FR1303025A FR3015695B1 FR 3015695 B1 FR3015695 B1 FR 3015695B1 FR 1303025 A FR1303025 A FR 1303025A FR 1303025 A FR1303025 A FR 1303025A FR 3015695 B1 FR3015695 B1 FR 3015695B1
Authority
FR
France
Prior art keywords
telescope
correction
real
defocation
satellite
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.)
Active
Application number
FR1303025A
Other languages
French (fr)
Other versions
FR3015695A1 (en
Inventor
Christophe Devilliers
Jean Francois Blanc
Olivier Chanal
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.)
Thales SA
Original Assignee
Thales SA
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 Thales SA filed Critical Thales SA
Priority to FR1303025A priority Critical patent/FR3015695B1/en
Publication of FR3015695A1 publication Critical patent/FR3015695A1/en
Application granted granted Critical
Publication of FR3015695B1 publication Critical patent/FR3015695B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/06—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors having a focussing action, e.g. parabolic mirror
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0804—Catadioptric systems using two curved mirrors
    • G02B17/0808—Catadioptric systems using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/181—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/185—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors with means for adjusting the shape of the mirror surface

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)

Abstract

Le procédé de correction en temps réel de la défocalisation d'un télescope spatial embarqué sur un satellite en orbite consiste à mesurer, en temps réel et en continu pendant des périodes d'observation du télescope, une température et un gradient thermique axial entre une face avant et une face arrière d'un miroir primaire du télescope, à partir des mesures de la température et du gradient thermique axial, à déduire une variation du rayon de courbure du miroir primaire et une variation de la focalisation du télescope et à corriger, en temps réel, la défocalisation du télescope.The method of real-time correction of the defocus of a space telescope on board an orbiting satellite consists in measuring, in real time and continuously during periods of observation of the telescope, a temperature and an axial thermal gradient between a face front and a rear face of a primary mirror of the telescope, from the measurements of the temperature and the axial thermal gradient, to deduce a variation in the radius of curvature of the primary mirror and a variation in the focusing of the telescope and to correct, in real time, the defocus of the telescope.

FR1303025A 2013-12-20 2013-12-20 METHOD AND DEVICE FOR REAL-TIME CORRECTION OF THE DEFOCATION OF A SPATIAL TELESCOPE, TELESCOPE AND SATELLITE COMPRISING SUCH A CORRECTION DEVICE Active FR3015695B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1303025A FR3015695B1 (en) 2013-12-20 2013-12-20 METHOD AND DEVICE FOR REAL-TIME CORRECTION OF THE DEFOCATION OF A SPATIAL TELESCOPE, TELESCOPE AND SATELLITE COMPRISING SUCH A CORRECTION DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1303025A FR3015695B1 (en) 2013-12-20 2013-12-20 METHOD AND DEVICE FOR REAL-TIME CORRECTION OF THE DEFOCATION OF A SPATIAL TELESCOPE, TELESCOPE AND SATELLITE COMPRISING SUCH A CORRECTION DEVICE

Publications (2)

Publication Number Publication Date
FR3015695A1 FR3015695A1 (en) 2015-06-26
FR3015695B1 true FR3015695B1 (en) 2017-03-31

Family

ID=50780511

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1303025A Active FR3015695B1 (en) 2013-12-20 2013-12-20 METHOD AND DEVICE FOR REAL-TIME CORRECTION OF THE DEFOCATION OF A SPATIAL TELESCOPE, TELESCOPE AND SATELLITE COMPRISING SUCH A CORRECTION DEVICE

Country Status (1)

Country Link
FR (1) FR3015695B1 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6404547B1 (en) * 2000-03-01 2002-06-11 Raytheon Company Semi-active focus and thermal compensation of a centrally-obscured reflective telescope

Also Published As

Publication number Publication date
FR3015695A1 (en) 2015-06-26

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