Some links on this page open new windows. Updated 2022 October 7 . Observing Guides Observing Planning Tools Visit this page for the Ephemeris Generator and other tools to plan your asteroid observing. Favorable Apparitions (1995-2050, numbered only) Asteroids reaching a favorable apparition for each year. SkyWatch SkyWatch is a dynamic page that computes current lunar and planetary positions and lunar phases for the entire year. Rise/set/transit times are determined for your location. Observing Guides AAVSO CCD Manual Compiled by the AAVSO. The basics of CCD photometry are the same regardless of the target. Standardizing Your Photometry A basic guide for putting instrumental magnitudes onto a standard system. Works for filtered and unfiltered data (with some caveats). Utility Programs / Information |