Radial-velocity observations with a newPoznań Spectroscopic Telescope

20 October 2009

Institut d'Astrophysique et de Géophysique

Université de Liège

Poznań Astronomical Observatoryof Adam Mickiewicz University

Poznań, Poland

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 ...

The telescope

Mirrors diameter – 0.5 m

Focal length – 2.2 m

Optical system – Newtonian

Diameter of the fibers – 50 m

Control room

Remote control test with web cameras

CCD camera:Andor DZ 4365-stage peltier cooling Temp. –95°C2048 x 2048 pix

pixel size 13.5 x 13.5μmdark current <1el/hreadout noise 2.1 el/pix

Echellé spectrograph

Spectral range:

4480 Å – 9250 Å

Resolution:

R=35000 (~8 km/s)

The echellé spectrograph

Baudrand and Bohm (1992)

Acquisition box

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 Å every order adds 80 Å

red range: 1pix = 0.08 Å order length = 160 Å every order adds 125 Å

ThAr calibration spectrum

1400 lines

Flatfield - fringe

Flatfield - fringe

Telluric lines removal

Flux calibration

Sp=B1

V=1m

exp=250s

Hβ 4861 Å

Line profile

Limiting magnitude BD+39 3012C 11m.2 Sp=F5 exp=30min

analysed by A. Rożek

V2080 Cyg

Sodium

NaD

V2080 Cyg

detached binary

Sp=F5

V=7m.4

exp=600s

period=4.9d

analysed by K. Kamiński

28 And

δ Sct

Sp=A7III

V=5m.2

exp=600s

analysed by T. Kwiatkowski, W. Borczyk and A. Rożek

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

Bootis

analysed by M. Fagas

γ Peg

β Cep

Sp=B2IV

V=2m.8

exp=300s

period=3.4h

υ1=6.59 c/d

analysed by W. Dimitrov

Quadruple system

Rozhen

PST

Two mirror observing mode

Two mirror observing mode

Two mirror observing mode

Iodine cell

Iodine cell

Iodine cell

First tests 7 february 2009RV = 20 m/s

Iodine cell

Mixing object light with callibrating ThAr lamp

Mieszanie światła obiektu i lampy ThAr

Photometry

Current statistics

• 2 years of operation

• 1650 spectra

• 50 objects

Future perspectives

• Spectroscopy on both mirrors

• Simultaneus photometry and spectroscopy

• Observing with iodine cell