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Original upload log[edit]
This image is a derivative work of the following images:
- File:Lunar_libration_with_phase_Oct_2007.gif licensed with PD-self
- 2007-11-06T01:03:49Z Tomruen 640x642 (10111965 Bytes) == Summary == {{Information | Description = {{en|[[Moon|Lunar]] [[:en:libration|libration]]. ''see below for more descriptions''}} {{fr|[[:fr:Libration|Librations]] de la [[:fr:lune|lune]]. ''Voir une description détaillée
Uploaded with derivativeFX
Technical[edit]
- Book: "Astronomical Formulae for Calculators, 4th edition", Jean Meeus, 1988, published by "Willmann-Bell, Inc"
- Chapter 30 "Position of the Moon"
Source bitmap for projection from NRL's Clementine Spacecraft:
- Animation
- 60 frames, 12 hour step.
- Period used: 29.5 days
- Animation began and ended near Apogee to minimize "jumping" when cycles back to the start.
- New moon given an unreal 1% intensity "Ambient light" to show motion in all phases.
- View assumed from the center of the earth. (Geometrically impossible, but best demonstration of monthly libration caused by moon's motion versus the shorter daily libration that would be included from the surface of the earth.)
This version of the animation has been scaled down to 450×451 px to get it under the current MediaWiki size limit (width×height×frames ≤ 12.5 Mpx) for rescaling GIF animations.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment |
| current | 08:23, 7 November 2011 |  | 450 × 451 (2.46 MB) | Travürsa | Removed a few frames to decrease the jumpiness when restarting. |
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