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In mid-December 2020, further improvements to drizzled data products have been implemented as new Hubble Advanced Products referred to as Single Visit Mosaics (SVMs). These new data products are all drizzled onto the same north-up pixel grid and may have improved relative alignment across filters within a given visit, enabling easy comparison of the images across multiple wavelengths. The algorithms algorithm used to derive these new data products is described in the drizzlepac documentation for Single Visit Mosaic Processing. For comparison, the algorithm used to produce standard drizzled data products is described in the documentation for Pipeline Astrometric Calibration.
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