Fig. 2.

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Profiles of several bright stars compared to the extended GALEX PSFs (FUV left, NUV right) by Morrissey et al. (2007) (top) and to the PSFs built in this paper (bottom) using the cores from Morrissey et al. (2007) and a power law extension based on real stars. The bright stars are from different fields and surveys. In NUV: HD107174 is in the GII survey (texp = 33 700 s). HD22025 is in the DEEP-DIS survey (texp = 29 000 s) and HD95342 is in the NGC 3486 field (see Table 1). In the case of FUV: TON48 is in the NGC 3486 field, while PG1038+634 is in two different surveys: MIS (texp = 1655 s) and NGS (texp = 1568 s). The profiles are normalized to the value at R = 12″ for FUV (I12) and at R = 30″ for NUV (I30). The underestimation of the outer slopes by the extended PSFs provided by Morrissey et al. (2007) is significant.
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