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|Title:||Diffracto-astrometry measurements: The technique|
|Abstract:||We investigate the possibility of performing precision astrometry on saturated stellar images of the Hubble Space Telescope (HST) Wide Field Planetary Camera 2 (WFPC2). We obtain the position of the stellar photocentres by using a centring technique which utilises the diffraction pattern produced by the secondary mirror support. This technique appears to be very promising in the astrometrical analysis. It allows a precision of the order of 10 milliarcseconds in WFPC2 images.|
|Appears in Collections:||Producción científica UdeG|
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