Provides the basics, terms, information on optics, mechanics, and the recommendation of testing before buying.

Articles on equipment.

Equipment information and links.

Personal account of binocular observations, includes simple finder charts with notes assessing the significance of the objects observed, and links.

Locating and observing a selection of targets through planning and preparation, required items, and background knowledge,

Factors to be used in consideration before purchasing equipment.

Information for choosing the correct type of equipment.

Information on optical instrument.

Series 14 and 20 for binocular astronomy, kaleidoscope, mount, photography, periscope or AV project.

Construction and pictures.