AAVSO Extended File Format
Version: 1.2
Release Date: July 27, 2011 (latest update: December 2, 2021)
This is one of two plain text (ASCII) formats that the AAVSO accepts for uploading a file of variable star observations. Please use the WebObs File Upload page to upload your file in the AAVSO Extended Format. The other format, which is intended for visual observers, is called the AAVSO Visual File Format.