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Title: Diffracto-astrometry measurements: The technique
Author: Sanchez, L.J.
Ruelas-Mayorga, A.
Olivares, J.
Allen, C.
Poveda, A.
Costero, R.
Nigoche-Netro, A.
Issue Date: 2014
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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