Ready References
A Guide to Backyard Astronomy
Using a Naked-Eye Starmap
Star-Finding With a Planisphere
AAVSO Historical Light Curves
Stepper Servo Motors
Heat and High Temperature
Taking the Earth's Pulse
Ready References A Guide to Backyard Astronomy 
Using a Naked-Eye Starmap Star-Finding With a Planisphere 
AAVSO Historical Light Curves Stepper Servo Motors 
Heat and High Temperature Taking the Earth's Pulse