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My understanding is that it is also 12-13 hours of exposure for the Webb image vs weeks for Hubble.
by throwaway5752 4y ago
My understanding is that it is also 12-13 hours of exposure for the Webb image vs weeks for Hubble.
- pavon 4y agoThat is incorrect. The famous Hubble Ultra Deep Field image[1] took 11.3 days of imaging spread over four months (because of high demand to use Hubble). However, that is a different part of the sky. The Hubble image shown here was taken as part of RELICS[2], a survey of images to find good candidates for JWST to image, and was only exposed for 1.7 hours (5 orbits at ~20 minutes each), compared to JWST's exposure time of 12.5 hours. So comparisons between between Hubble and JWST for that particular shot are not fair to Hubble. [1]https://esahubble.org/images/heic0611b/ https://esahubble.org/images/heic0611b/ [2]https://archive.stsci.edu/prepds/relics/ https://archive.stsci.edu/prepds/relics/