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Design and implementation of an image stabilization device at the THEMIS solar telescope

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Abstract

An image stabilizer has been inserted into the optical path of the THEMIS solar telescope. THEMIS is a Ritchey–Chretien reflector telescope using an altazimuthal mount and closely tied to its spectrograph. The optical and mechanical design, implementation and system tests are described, and emphasis is put on the complexity of situations that this stabilizer must accept, including the scanning of the solar surface while stabilizing. The current closed-loop crossover frequency of the device is 65 Hz at − 3 dB on all typical solar scenes.

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References

  1. Hill, F., Beckers, J., Brandt, P., Briggs, J., Brown, T., Brown, W., Collados, M., Denker, C., Fletcher, S., Hegwer, S., Horst, T., Komsa, M., Kuhn, J., Lecinski, A., Lin, H., Oncley, S., Penn, M., Radick, R., Rimmele, T., Socas-Navarro, H., Streander, K.: In: Stepp, L.M. (ed.) Ground-based and Airborne Telescopes. Proceedings of the SPIE, vol. 6267, 62671T (2006)

  2. Aulanier, G., Gigan, P., Malherbe, J.-M., Molodij, G.: Projet de stabilisation d’image pour le télescope THEMIS. Report to the THEMIS Scientific Advisory Council (2003)

  3. Ballesteros Ramirez, E.: Estabilizador bidimensional optimizado para imágenes solares. Ph.D. Thesis, U. La Laguna (1996)

  4. Ballesteros, et al.: Two dimensional, high spatial resolution, solar spectroscopy using a correlation tracker. Astron. Astrophys. Suppl. Ser. 115, 353–365 (1996)

    ADS  Google Scholar 

  5. Cruvellier, et al.: T.A.O.: Themis adaptive optics. Report to the THEMIS Scientific Advisory Council (unpublished) (2003)

  6. Darvan, T.A., Dunn, R.B.: Influence of seeing on measurements of horizontal flows in the solar photosphere. In: High Spatial Resolution Solar Observations, Proceedings of the 10th Sacramento Peak Summer Workshop, p. 502, Sunspot, New Mexico, August 22–26, 1988 (1989)

  7. Edwards, C.G., Levay, M., Gilbreth, C.W., Tarbell, T.D., Title, A.M., Wolfson, C.J., Torgerson, D.D.: The correlation tracker image stabilization system for HRSO. Bull. Am. Astron. Soc. 19, 929 (1987)

    ADS  Google Scholar 

  8. Judge, P.G., Elmore, D.L., Lites, B.W., Keller, C.U., Rimmele, T.: Evaluation of seeing induced crosstalk in tip-tilt corrected solar polarimetry. Appl. Opt. 43(19), 3817–3828 (2004)

    Article  ADS  Google Scholar 

  9. Labeyrie, A.: Attainment of diffraction limited resolution in large telescope by Fourier analysing speckle patterns in star images. Astron. Astrophys. 6, 85–87 (1970)

    ADS  Google Scholar 

  10. Knox, K.T., Thompson, B.J.: Recovery of images from atmospherically degraded short-exposure photographs. Astrophys. J. 193, L45 (1974)

    Article  ADS  Google Scholar 

  11. Molodij, G., Rayrole, J., Madec, P.-Y., Colson, F.: Performance analysis for THEMIS image stabilizer optical system I. Astron. Astrophys. Suppl. Ser. 188, 169–179 (1996)

    Article  ADS  Google Scholar 

  12. Rimmele, Th., Von der Lühe, O., Wiborg, P.H., Widener, A.L., Dunn, R.B., Spence, G.: Solar feature correlation tracker. In: Active and Adaptive Optical Systems. Proceedings of the Meeting, pp. 186–193. San Diego, CA, July 22–24, 1991 (A93-39451 15-74) (1991)

  13. Ricort, G., Aime, C., Roddier, F., Borgnino, J.: Determination of Fried's parameter r 0 prediction for the r.m.s. contrast in solar granulation. Sol. Phys. 69, 223 (1981)

    Article  ADS  Google Scholar 

  14. Von der Lühe, et al.: Solar feature correlation tracker for ground based telescopes. Astron. Astrophys. 224, 351 (1989)

    ADS  Google Scholar 

  15. Von der Lühe, O.: Speckle imaging of solar small scale structure. Astron. Astrophys. 268, 374–390 (1993)

    ADS  Google Scholar 

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Acknowledgements

THEMIS is operated on the Island of Tenerife by the Centre National de la Recherche Scientifique (CNRS, France), the Institut National des Sciences de l’Univers (INSU, France) and the Consiglio Nazionale delle Ricerche (CNR, Italy) in the Spanish Observatorio del Teide of the Instituto de Astrofisica de Canarias.

The authors wish to thank O. Von Der Lühe and Friedrich Vogler for making available the KISIP V speckle imaging software from the Kiepenheuer-Institut für Sonnenphysics (KIS), and for the test run on our data.

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Authors and Affiliations

  1. THEMIS - UPS 853 du CNRS, c/o IAC, Via Lactea s/n, 38200, La Laguna—Tenerife, Spain

    Bernard Gelly & Arturo López Ariste

  2. THEMIS S.L., C./ Saturno, 3, 382005, La Laguna—Tenerife, Spain

    Claude Le Men, Cyril Delaigue & Ruyman Gónzalez Perez

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  1. Bernard Gelly
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  2. Claude Le Men
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  3. Arturo López Ariste
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  4. Cyril Delaigue
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  5. Ruyman Gónzalez Perez
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Correspondence to Bernard Gelly.

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Gelly, B., Le Men, C., López Ariste, A. et al. Design and implementation of an image stabilization device at the THEMIS solar telescope. Exp Astron 22, 67–85 (2008). https://doi.org/10.1007/s10686-007-9083-4

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  • DOI: https://doi.org/10.1007/s10686-007-9083-4

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