The second edition of the Astronomy Observer's Journal, an amateur astronomer's workbook for planning and recording astronomy viewing sessions. The workbook is designed for the amateur astronomer or astrophotographer who prefers to keep written site, instrument and object notes and sketches for record and future reference. The journal contains an Observation Session Planner for creating lists of objects for multiple viewing sessions, an Observation Record for capturing site and object notes from an object viewing session and an Astronomy Reference of useful formulas, and quick reference look-up data to support the amateur astronomer in the field.