The first extension is the "best" aperture that produces the lowest rms. The next 20 extensions are light curves using 10 different circular apertures and 10 different PRF-based apertures (including whichever one was identified as the "best" aperture). The next two extensions define the 10 circular and the 10 PRF-based apertures, and the final extension is the summed image of all postage stamp frames.
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