The Hubble Legacy Field

[SkyJamie]

"Astronomers have put together the largest and most comprehensive "history book" of galaxies into one single image, using 16 years' worth of observations from NASA's Hubble Space Telescope."

https://www.nasa.gov/feature/goddard/2019/hubble-astronomers-assemble-wide-view-of-the-evolving-universe

"The vast number of galaxies in the Legacy Field image are also prime targets for future telescopes. "This will really set the stage for NASA's planned Wide Field Infrared Survey Telescope (WFIRST)," Illingworth said. "The Legacy Field is a pathfinder for WFIRST, which will capture an image that is 100 times larger than a typical Hubble photo. In just three weeks' worth of observations by WFIRST, astronomers will be able to assemble a field that is much deeper and more than twice as large as the Hubble Legacy Field."

[Gina]

Interesting.  I'm planning very wide field Ha as one of my projects for the summer months when the Milky Way is in good view for nebulae.