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Announcement: New Forums

We are excited to announce the launch of our new forums! You can access itforums.aavso.org. For questions, please see ourblog post.The forums at aavso.org/forum have become read-only.

Announcement: New Applications

We are excited to announce the launch of our new applications! We're opening up early access to our new applications for searching, downloading, and submitting photometric observations. You can now access these applications through these links:

We ask for your feedback in order to help us improve these applications. Please send feedback for the applications above tofeedback@aavso.org. Note: please avoid duplicating submissions across the two submit applications.

Please complete this form to download variable star data from theAAVSO International Database. The output data file format can be found here:https://www.aavso.org/format-data-file. For very large datasets or further assistance, please contact AAVSO HQ (aavso@aavso.org)
WHAT DATE RANGE WOULD YOU LIKE TO USE?
Enter Julian date or Gregorian Date (MM/DD/YYYY)
HOW SHALL WE CONTACT YOU?
DO YOU WANT DISCREPANT DATA INCLUDED?
DO YOU WANTDIFF ANDSTEP DATA INCLUDED?
IN WHAT FORMAT SHOULD THE DATA BE RETURNED?