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Waxing  Moon  

 Tycho  and  Its  Environs

    This image has been rotated so that N is up and S is down. The moon phase is 11 days following new, so illumination is about 89%. At the focal length used and the small imaging chip size, only a small area near the southern pole is shown. The astonishing system of rays emerging from Tycho (which extend over much of the visible hemisphere) can be seen as the light and dark streaks that begin at the right side of the crater. Click on the image to see some of the crater names.

 Date  03 May 2001; 11 PM PDT
 Scope  Astro-Physics 130 EDF, f12 (2x Barlow) on A-P 900 GTO mount    
 Exposure  Meade 416XTE CCD camera, 15 msec exposure with H-alpha filter    
 Processing   Rotated, stretched, and sharpened in PhotoShop

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