Stephans Quintet from Webb, Hubble, and Subaru

Astronomy Picture of the Day · 2022-07-18 · NASA (public domain)

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Stephans Quintet from Webb, Hubble, and Subaru — APOD for 2022-07-18

OK, but why can't you combine images from Webb and Hubble? You can, and today's featured image shows one impressive result. Although the recently launched James Webb Space Telescope (Webb) has a larger mirror than Hubble, it specializes in infrared light and can't see blue -- only up to about orange. Conversely, the Hubble Space Telescope (Hubble) has a smaller mirror than Webb and can't see as far into the infrared as Webb, but can image not only blue light but even ultraviolet . Therefore, Webb and Hubble data can be combined to create images across a wider variety of colors. The featured image of four galaxies from Stephan's Quintet shows Webb images as red and also includes images taken by Japan 's ground-based Subaru telescope in Hawaii . Because image data for Webb , Hubble , and Subaru are made freely available, anyone around the world can process it themselves, and even create intriguing and scientifically useful multi-observatory montages. Stephan's Quintet from just: Webb , Hubble

Astronomy Picture of the Day for 2022-07-18 — image & explanation courtesy of NASA (public domain), mirrored at Tukuk-OS for reading and search convenience.

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