They allow us to see where our data is coming from, and identify TPFs are typically the first port of call when studying a star with Lightkurve package allows us to work with FITS files without having toĭirectly handle its detailed file structure. TPFs also include information about theĪstronomical background to the image, which is removed from the raw The TPF images are cut out ‘postage stamps’ of the full observations, Each time-stamp is referred to as a cadence. TPFs can be thought of as stacks of images, with one image for every In the pixels where the star appears, you can make a measurement of theĪmount of light form a star in that observation. These cut-out imagesĪre called Target Pixel Files, or TPFs. Pixels are selected around certain targeted stars. Not all data for the stars in a given sector is recorded. By doing so TESS observes how the brightnesses of The TESS telescope observes stars for long periods of time, just underĪ month per sector.
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