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[Music]

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when it opens its eyes to our universe

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in the mid-2020s

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wfirst the wide field infrared survey

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telescope will capture images unlike any

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satellite before it

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wfirst will have the same image

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resolution as hubble but will cover an

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area 100 times larger

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wfirst will also view the sky in

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carefully selected wavelengths of

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infrared light which will allow it to

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see through obscuring dust to reveal

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hidden stars and watch the growth of

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to see what the sky will look like to

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wfirst

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scientists use special processing

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techniques to create simulated images

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in this case they began with a hubble

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mosaic of andromeda one of the closest

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galaxies to our own

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released in 2015 this mosaic was created

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out of over 400 individual hubble images

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and took more than three years

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because of its enormous coverage wfirst

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will be able to create a similar mosaic

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with just two images each taking about

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90 minutes

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wfirst images are actually made of 18

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separate panels each one corresponding

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to a single 16 megapixel detector

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the arrangement of these detectors

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creates the distinctive wfirst image

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the simulated image is not just special

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because of its size however

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it also shows andromeda as it will

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appear through wfirst optics and

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infrared filters

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to achieve this

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scientists started with hubble filters

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that are closest to wfirsts

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then they used software to measure the

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positions and brightnesses of the

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roughly 100 million stars in those

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images and applied those as input to

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wfirst image simulation software which

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added each star back to the image after

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applying the expected effects of the

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wfirst optics filters and detectors

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[Music]

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the resulting image reveals many stars

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that were blocked by dust in visible

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light

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a more comprehensive view of the stars

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in the local universe

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wfirst will also use its broad view to

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search for planets around other stars in

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our galaxy

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and to look for the fingerprint of dark

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matter and dark energy in the distant

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reaches of the universe

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with an unprecedented combination of

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breadth and depth