The first trove of data from DECaPS was released in 2017. With the addition of the new data, the survey now covers 6.5 percent of the night sky and spans a staggering 130-degrees in length. While it might sound modest, this equates to 13,000 times the angular area of the full Moon.
“When combined with images from Pan-STARRS 1, DECaPS2 completes a 360-degree panoramic view of the Milky Way’s disk and additionally reaches much fainter stars,” says Edward Schlafly, a researcher at the AURA-managed Space Telescope Science Institute and a co-author of the paper describing DECaPS2 published in The Astrophysical Journal Supplement. “With this new survey, we can map the three-dimensional structure of the Milky Way’s stars and dust in unprecedented detail.”
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