Tycho and Copernicus: Lunar Ray Craters

The length of lunar crater rays explained using secondary crater

APOD Retrospective: August 9 - Starship Asterisk*

Micro Machine Shop Mods Etc, PDF, Screw

Western Slope Skies - Lunar Rays and Ray Craters

Lunar Maps

Observing Along the Moon's Terminator, Michael Packer

APOD: 2005 March 5 - Tycho and Copernicus: Lunar Ray Craters Astronomy pictures, Apollo space program, Light in the dark

Micro Machine Shop Mods Etc, PDF, Screw

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Courses in Astrophotography