Comet C/2020 F8 (SWAN) discussed in Astronomy SE:
was discovered by humans but using the SWAN camera on SOHO.
Earthsky.org's Here’s how SOHO and a skywatcher discovered comet SWAN shows a GIF sequence of images from this camera from publicly available on-line data.
It shows a full sphere of data 0 to 360 degrees in (ecliptic?) "longitude" and -90 to +90 in "latitude".
Question: How does SOHO's SWAN camera image the entire 4π sr celestial sphere?
The movement of comet C/2020 F8 (SWAN) through successive all-sky maps as observed with the SWAN instrument on SOHO during the period from April 1 to May 9, 2020. Image via ESA.
This GIF also available at https://www.nasa.gov/feature/goddard/2020/new-comet-discovered-by-esa-and-nasa-solar-observatory which says:
The new comet was first spotted in April 2020, by an amateur astronomer named Michael Mattiazzo using data from a SOHO instrument called Solar Wind Anisotropies, or SWAN — as seen here. The comet appears to leave the left side of the image and reappear on the right side around May 3, because of the way SWAN's 360-degree all-sky maps are shown, much like a globe is represented by a 2D map.
SWAN maps the constantly outflowing solar wind in interplanetary space by focusing on a particular wavelength of ultraviolet light emitted by hydrogen atoms. The new comet — officially classified C/2020 F8 (SWAN) but nicknamed Comet SWAN — was spotted in the images because it's releasing huge amounts of water, about 1.3 metric tons (about 1.5 imperial tons) per second. As water is made of hydrogen and oxygen, this release made Comet SWAN visible to SOHO's instruments.
Comet SWAN is the 3,932nd comet discovered using data from SOHO. Almost all of the nearly 4,000 discoveries have been made using data from SOHO's coronagraph, an instrument that blocks out the Sun's bright face using a metal disk to reveal the comparatively faint outer atmosphere, the corona. This is only the 12th comet discovered with the SWAN instrument since SOHO's launch in 1995, eight of which were also discovered by Mattiazzo.
Below are the kinds of moving images I've normally seen from SOHO's fixed cameras pointed towards the Sun:
Above: from What exactly is the interaction that blocked Juno's data downlink near solar conjunction? Below: From This answer to What is this white dot and strange line in SOHO image? Yes those are the Pleiades wizing past the Sun!