Binary star research using

Prezentace na téma: "Binary star research using"— Transkript prezentace:

1 Binary star research using
microtelescopes Miloslav Zejda, Zdeněk Mikulášek, Jiří Liška Masaryk University Brno, Czech Republic Petr Svoboda private observatory, Brno, Czech Republic PRCSA, Lijiang, 15th April 2011

2 Binary star research using Binary star research using
nano-telescopes Binary star research using microtelescopes Miloslav Zejda, Zdeněk Mikulášek, Jiří Liška Masaryk University Brno, Czech Republic Petr Svoboda private observatory, Brno, Czech Republic PRCSA, Lijiang, 15th April 2011

3 first telescopes – diameter only several cm!
Galileo & Castelli: discoveries of binaries or multiple systems: Mizar (1616), J1 Orionis – Trapez (1617) b Scorpii …

4 Variable stars observations (in modern history since 1596)
Means: naked eye – limits – 6-7 mag, telescope + eye – 1844 Argelander telescope + photography – 1881 Draper – 14.7 mag telescope + photoelectric photometer 1892 Monck, 1907 Stebinns 1946 Kron, early 50‘s Johnson & Morgan UBV telescope + CCD – 1979 – Kitt Peak NO Prvn astrofotograi (snmek Mesce) pordil J. Draper. Kratce nato E. Becquerel a po nem J. Draper zskali fotograe slunecnho spektra. Prvn uspesny snmek (daguerotypii) hvezd (konkretne Vegy) pordili J. A. Whipple s G. Bondem Prvn koloidn snmek hvezd (Alkora a Mizara) pordil G. Bond V roce 1881 H. Draper pordil snmek mlhoviny v Orionu, na nz byly zaznamenany hvezdy az do 14,7 mag. A. Common experimentujc se suchymi deskami od r pak pordil nekolik snmku mlhoviny (nejleps v roce 1883) na nichz ukazal, ze dlouhymi expozicemi na suchych fotograckych deskach je mozne zskat obrazy hvezd, ktere nejsou stejnym dalekohledem vizualne pozorovatelne (podrob- nosti viz (podrobnosti viz Hearnshaw, 1996).

5 Silicon age spread of objective measurements among many observatories and amateur astronomers increasing number of photometric measurements observing of fainter and fainter objects stars brighter than 6 mag are too bright => lack of observations of bright stars!

6 objections? surveys – ASAS… - monochromatic, unsatisfactory time resolution space missions – Hipparcos – good, but old, time resolution Kepler, COROT – excellent jobs, but … GAIA - ? nano-satellite – BRITE project

7 solution? return to Galileo‘s size telescopes
=> usage of micro/nanotelescopes „windows astronomy“ „balcony astronomy“ break down the prejudices suitable for amateurs and small observatories Advantages: cheap acquisition cheap and efficient practise excellent opportunity to obtain unique long sets of observations

8 suggestions? to equip the observers with a kit (CCD, photometric filters, nanotelescope) tell them what and how they should observe (targets, filters, time resolutions…) establish a network of observers – see for an example

9 Examples of usage nano-telescopes

10 Minima timings of eclipsing binaries
NO Pup Minima timings of eclipsing binaries P. Svoboda; 0.035m refractor CCD SBIG ST7 filter I J. Liška: RF 0.04m + CCD ATIK 16Ic  Phe DI = 0.15 mag TW Dra

11 Light curves J. Liška: 0.04m refractor + CCD G2-0402
SAAO 0,5m + single-channel PEP MJUO 0,6m + single-channel PEP L. C. Watson, J. D. Pritchard, J. B. Hearnshaw,P P. M. Kilmartin and A. C. Gilmore: MNRAS 325, 143–150 (2001)

12 P. Svoboda; 0.035m refractor, CCD SBIG ST7

13 P. Svoboda; 0.035m refractor, CCD SBIG ST7
HD 1438 (And) amplitude DV≈ 0.02 mag

14 It is worth to do it!

15 Thank you for your attention!
In the presentation we used observations and materials from: VSES archive NYX archive personal archives of authors MNRAS 325, 143–150 (2001) NASA ADS servise webpages: and others Many thanks to organizers especially to Prof. Qian for their help and hospitality!