Ready References
A Guide to Backyard Astronomy
The Art of Using a Telescope
Power and Aperture in Binoculars
Variable Stars Explained
Overview of LabView
Molding and Casting
Technique of High Vacuum
Ready References A Guide to Backyard Astronomy 
The Art of Using a Telescope Power and Aperture in Binoculars Variable Stars Explained Overview of LabView 
Molding and Casting Technique of High Vacuum