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C/2022 E3 (ZTF) and C/2022 U2 (ATLAS) C/2020 F3 (NEOWISE)
For optimal display, the monitor should be calibrated so that as many shades of the grayscale shown below are distinguishable. At least the 4% steps should be separated by every monitor. The 2% steps are visible on better monitors. To distinguish the 1% steps, a HDR monitor is required.