Which wavelength ranges define Hubble’s established observational window complementing JWST’s infrared focus?

Visible light and ultraviolet

The Hubble Space Telescope and the James Webb Space Telescope (JWST) are designed to be complementary partners in astronomical observation rather than redundant. Hubble's primary observational strength lies in the visible light spectrum and the ultraviolet (UV) range, though it also covers near-infrared. In contrast, JWST is optimized for deeper observations primarily within the infrared spectrum, allowing it to peer through heavy dust clouds and view highly redshifted light from the earliest times. Therefore, Hubble provides an essential, long-term, continuous baseline dataset across the visible/UV domain, which is vital for constructing comprehensive, multi-wavelength atmospheric profiles and comparative studies with JWST's deeper infrared data.