This post is also available in: 日本語 (Japanese)
Neptune 2021-09-21
The apparent diameter is as small as 2.4 arcseconds, and you can observe the disk image and the satellite Triton.
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This post is also available in: 日本語 (Japanese)
Neptune 2021-09-21
The apparent diameter is as small as 2.4 arcseconds, and you can observe the disk image and the satellite Triton.