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Summary
| Description |
English: Neptune's faint irregular moon S/2021 N 1 (circled) seen in a 15-frame average stack of 370-second exposure images (1.54 hr integration time) from the Gemini North telescope's GMOS-N camera. Each image is shifted to follow S/2021 N 1's movement so it stays fixed in the center (so it looks like a single dot) while the background stars and galaxies move relative to it (and thus look like smeared trails). Stacking all the images together and averaging their brightness values helps isolate the moon's signal from the background noise. North is up and East is left.
These images were taken by Scott Sheppard, David Tholen, and Chad Trujillo on 3 November 2023, as part of his observation proposal to recover S/2021 N 1 from getting lost. (proposal ID GN-2023B-DD-102) |
| Date | |
| Source | Own work. Original frames were taken by Scott S. Sheppard and stored in the public Gemini Observatory Archive under NOIRLab. These Gemini images are also downloadable via the Solar System Object Image Search. |
| Author | Images stacked & processed by Nrco0e. Original frames were taken by Scott S. Sheppard and stored in the public Gemini Observatory Archive under NOIRLab. These Gemini images are also downloadable via the Solar System Object Image Search. |
| Permission (Reusing this file) |
NOIRLab: Unless specifically noted, the images, and videos distributed on the public NOIRLab website (Gemini Observatory is associated with NOIRLab), along with the texts of press releases, announcements, pictures of the week, blog posts and captions, are licensed under a Creative Commons Attribution 4.0 International License, and hence may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible. (https://noirlab.edu/public/copyright/) CADC: This image has been publicly provided from the Canadian Astronomy Data Centre, which states that "Data held in the CADC archive are open as part of the Government of Canada's Open Science Commitment. Data deposited into the CADC archive are public domain and made available under the Creative Commons License CC BY 4.0." (https://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/en/about.html) |
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Licensing
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:25, 4 July 2025 | | 600 × 400 (262 KB) | Nrco0e | Uploaded own work with UploadWizard |
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