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Radial-Velocity Observations with the New Poznań Spectroscopic Telescope

This paper presents the implementation of radial-velocity observations using the new Poznań Spectroscopic Telescope (PST). With a 0.5 m diameter mirror and advanced echelle spectrograph, our team achieved a spectral resolution of R=35000, enabling the analysis of various celestial objects. We discuss our observations, including binary systems, and the calibration methods employed, such as the use of an iodine cell. Our results demonstrate the telescope's capability for high-precision spectroscopy and outline the potential for simultaneous photometry and spectroscopy in future studies.

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Radial-Velocity Observations with the New Poznań Spectroscopic Telescope

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  1. 20 October 2009 Institut d'Astrophysique et de Géophysique Université de Liège Poznań Astronomical Observatory of Adam Mickiewicz University Poznań, Poland Radial-velocity observations with a newPoznań Spectroscopic Telescope

  2. Our team R. Baranowski, P. Bartczak, W. Borczyk, W. Dimitrow, M. Fagas, R. Hirsch, K. Kamiński, A. Kruszewski, K. Kurzawa, T. Kwiatkowski, A. Przybyszewska, A. Rożek, A. Schwarzenberg-Czerny, N. Żywucka ...

  3. The telescope Mirrors diameter – 0.5 m Focal length – 2.2 m Optical system – Newtonian Diameter of the fibers – 50 m

  4. Control room

  5. Remote control test with web cameras

  6. CCD camera: Andor DZ 436 5-stage peltier cooling Temp. –95°C 2048 x 2048 pix pixel size 13.5 x 13.5μm dark current <1el/h readout noise 2.1 el/pix Echellé spectrograph Spectral range: 4480 Å – 9250 Å Resolution: R=35000 (~8 km/s)

  7. The echellé spectrograph Baudrand and Bohm (1992)

  8. Acquisition box

  9. Echellé spectrum – 64 orders 4480 Å – 9250 Å blue range: 1pix = 0.04 Å order length = 80 Å every order adds 40 Å middle: 1pix = 0.05 Å ~2.5 km/s order length = 100 Åevery order adds 80 Å red range: 1pix = 0.08 Å order length = 160 Å every order adds 125 Å

  10. ThAr calibration spectrum 1400 lines

  11. Flatfield - fringe

  12. Flatfield - fringe

  13. Telluric lines removal

  14. Flux calibration

  15. Line profile Sp=B1 V=1m exp=250s Hβ 4861 Å

  16. Limiting magnitude BD+39 3012C 11m.2 Sp=F5 exp=30min analysed by A. Rożek

  17. V2080 Cyg Sodium NaD

  18. V2080 Cyg detached binary Sp=F5 V=7m.4 exp=600s period=4.9d analysed by K. Kamiński

  19. 28 And δ Sct Sp=A7III V=5m.2 exp=600s analysed by T. Kwiatkowski, W. Borczyk and A. Rożek

  20. V440 Per δ Cep Sp=F7Ib V=6m.3 exp=600s okres=7.57d σRV=136 m/s • --2 harmoniki • --1 harmonika analysed by M. Fagas, A.Schwarzenberg-Czerny, R. Smolec, published: MNRAS 396, 2194 - 2200

  21.  Bootis analysed by M. Fagas

  22. γ Peg β Cep Sp=B2IV V=2m.8 exp=300s period=3.4h υ1=6.59 c/d analysed by W. Dimitrov

  23. Quadruple system Rozhen PST

  24. Two mirror observing mode

  25. Two mirror observing mode

  26. Two mirror observing mode

  27. Iodine cell

  28. Iodine cell

  29. Iodine cell First tests 7 february 2009 RV = 20 m/s

  30. Iodine cell

  31. Mixing object light with callibrating ThAr lamp

  32. Mieszanie światła obiektu i lampy ThAr

  33. Photometry

  34. Current statistics • 2 years of operation • 1650 spectra • 50 objects

  35. Future perspectives • Spectroscopy on both mirrors • Simultaneus photometry and spectroscopy • Observing with iodine cell

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