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MOST Guide Star Photometry

MOST Guide Star Photometry. Overview, Statistical Analysis by Rainer Kuschnig & the MOST Team. MOST Photometry Sources. Science CCD. open field direct imaging. Fabry target. Guide stars. Direct imaging targets. micro Lens Array.

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MOST Guide Star Photometry

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  1. MOST Guide Star Photometry Overview, Statistical Analysis by Rainer Kuschnig & the MOST Team COROT WEEK 10 - 5-9 June 2006 – Nice

  2. MOST Photometry Sources Science CCD open field direct imaging Fabry target Guide stars Direct imaging targets micro Lens Array Star Tracker CCD COROT WEEK 10 - 5-9 June 2006 – Nice

  3. MOST Guide Star Photometry • up to 20 guide stars per field • the magnitude range 6.5-11 • exposure time is 1.5 sec • no images are recovered • brightest guide stars -> 30ppm COROT WEEK 10 - 5-9 June 2006 – Nice

  4. MOST Guide Star Photometry 1.5 sec exposure calculate background apply threshold Sigexp = S (Ipix > backgr+threshold) Sigtot = S N*Sigexp -> stored in the science data stream N = integer (target sampling time / guide Star exposure Time) COROT WEEK 10 - 5-9 June 2006 – Nice

  5. MOST Guide Stars – Performance COROT WEEK 10 - 5-9 June 2006 – Nice

  6. MOST Guide Stars – NOISE COROT WEEK 10 - 5-9 June 2006 – Nice

  7. MOST Guide Stars - Stats Total number of 263 – Feb 2006 time base: 7 to 47 days COROT WEEK 10 - 5-9 June 2006 – Nice

  8. MOST Guide Stars – Locations • typically field stars • clusters: NGC2264,NGC2244 • dense fields: WR123,WR103 COROT WEEK 10 - 5-9 June 2006 – Nice

  9. MOST Guide Stars – NGC2264 COROT WEEK 10 - 5-9 June 2006 – Nice

  10. COROT WEEK 10 - 5-9 June 2006 – Nice

  11. COROT WEEK 10 - 5-9 June 2006 – Nice

  12. MOST Guide Stars – Variables • 3 eclipsing binaries • 3 gam Dor • 2 K puls • 3 rotational variables • 7 SPB(e,sg,classical) • 12 LPVs • 10 del Scuti ~15 to be finally classified …….. to be continued …… COROT WEEK 10 - 5-9 June 2006 – Nice

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