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File:Francisco VLT 2002-09-05 average stack annotated.png

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Francisco_VLT_2002-09-05_average_stack_annotated.png (600 × 400 pixels, file size: 88 KB, MIME type: image/png)

Summary

Description
English: Uranus's faint irregular moon Francisco (circled) seen in a 8-frame average stack of 360-second exposure images (0.8 hr integration time) from the Very Large Telescope's FORS1 camera (R filter). Each image is shifted to follow Francisco'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 P. Rousselot, O. Mousis, and B. Gladman on 5 September 2002, as part of observation program 69.C-0460(A)
Date
Source Own work. Original frames were taken by P. Rousselot, O. Mousis, and B. Gladman and stored in the public ESO Science Archive. These VLT images are also downloadable via the CADC's Solar System Object Image Search.
Author Images stacked & processed by Nrco0e. Original frames were taken by P. Rousselot, O. Mousis, and B. Gladman and stored in the public ESO Science Archive. These VLT images are also downloadable via the CADC's Solar System Object Image Search.
Permission
(Reusing this file)		 ESO Archive FAQ: "As a rule, science data in ESO Archive are available to users worldwide as soon as data proprietary period has expired (typically: one year)." http://archive.eso.org/cms/faq/are-all-data-from-eso-archive-available-worldwide.html
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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Average stack

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In dieser Datei abgebildete Objekte

depicts

Francisco

inception

5 September 2002

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Date/TimeThumbnailDimensionsUserComment
current23:18, 5 July 2025Thumbnail for version as of 23:18, 5 July 2025600 × 400 (88 KB)Nrco0eUploaded own work with UploadWizard

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