Ready References
A Guide to Backyard Astronomy
Beating the Seeing
Caring for Optics
Setting Up and Observing Program
Signal Conditioning and Data Acquisition Basics
Easy Prototyping
The Interior of the Earth
Ready References A Guide to Backyard Astronomy 
Beating the Seeing 
Caring for Optics 
Setting Up and Observing Program Signal Conditioning and Data Acquisition Basics Easy Prototyping The Interior of the Earth