Using global PSF properties to probe the WFC 3 UVIS
نویسندگان
چکیده
This ISR briefly reviews how the WFC3 UVIS channel focus and alignment impact the PSF. The aim is to verify whether we can identify any simple PSF measurement that would allows to monitor these quantities. We find that the centering of the PSF within a pixel is a crucial parameter that needs to be calibrated or corrected for and that PSF sharpness is the most promising parameter.
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تاریخ انتشار 2002