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LUNAR NEAR SIDE PHASE IMAGE SET

Near side lunar phase image set rendered using POV-Ray v3.7 and
the Lunar Phase Series Generator program v7, by Jay Tanner.

The image set consists of 361 renderings of the geocentric moon
at 1-degree intervals of phase from zero to 360 degrees.


Size    : 256x256 pixels
Format  : PNG - Grayscale on transparent background
Author  : Jay Tanner - 2015
License : Public Domain

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Imagine the sun traveling clockwise around a giant circle with the moon fixed
in the center and directly to the front is zero degrees.  The phase angle is
the same as the position of the sun on this circle, measured from 0 to 360°.
When the sun is 90 degrees to the right, we see the first quarter phase.
As the sun traverses the circle, the moon goes through all its phases.

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LUNAR PHASE ANGLE LEGEND

Moon directly to front.  North is upward.
Sun moves clockwise around lunacentric phase circle.

ANGLE    PHASE
  0°     New Moon
 45      Waxing Crescent
 90      First Quarter
135      Waxing Gibbous
180      Full Moon
225      Waning Gibbous
270      Last Quarter
315      Waning Crescent
360      New Moon
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