Key facts
- Manuals
- 1
- Languages
- ZH
- Last added
- 2026-10-01
Featured AAVSO manuals

AAVSO Visual Variable Star Observing Manual
The manual, published by the American Association of Variable Star Observers, introduces new and experienced observers to the fundamentals of visual variable‑star observing. It explains what variable stars are, why they are scientifically important, and how the AAVSO supports observers worldwide.
The guide is organized into chapters covering preparation, equipment, observing techniques, data recording, Julian‑date calculations, program planning, and submission of observations to the AAVSO database. Appendices provide sample light curves, additional resources, and an index for quick reference. This manual is written in Chinese.
Covers: What is a Variable Star? · Why Study Variable Stars? · About the AAVSO · Preparation and Equipment · Observing Procedures · Julian Date and Time Calculations
Latest AAVSO manuals
AAVSO Visual Variable Star Observing Manual
User Manual 82 pages · 6.6 MB · ZHAAVSO's Visual Variable Star Observing Manual provides guidance on planning, conducting, and reporting visual observations of variable stars.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in AAVSO manuals
What is a variable star?
A variable star is a star whose brightness changes over time.
