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Download Data

Due to technical limitations of our current website, you may receive an error or blank screen when attempting to download large data sets. Please contact AAVSO staff for assistance to obtain the following large data sets: SS Cyg, R CrB, V455 And, and TT Ari, or for any other cases where you have difficulty obtaining data.
 
WHAT IS THIS?
This is the AAVSO Data Download form, where you can access and download data from the AAVSO International Database, which has over 18 million visual, PEP, and CCD observations of variable stars dating back to its founding over 90 years ago. Over 6 thousand observers from all over the world have contributed data for over 6 thousand objects. This is the largest and highest quality digital database of variable star observations available. All our data go through a strict quality control analysis (validation), a procedure that insures the data are as error free as possible.
WHAT CAN I DO?
By entering the specifics of the search you wish to perform in the form to the right, you can download data from the AAVSO International Database in a variety of formats.
HOW CAN I GET HELP?
Guidance in the use of this form is available on the form by clicking any of the question mark icons found next to each input field. If you need further assistance, send us an E-mail at: aavso@aavso.org
WHAT IS THE AUID, NAME, OR DESIGNATION OF THE OBJECT?
WHAT DATE RANGE WOULD YOU LIKE TO USE?
Enter Julian date or Gregorian Date (MM/DD/YYYY)
START DATE
END DATE
HOW SHALL WE CONTACT YOU?
FIRST NAME
LAST NAME
EMAIL
COUNTRY
AFFILIATION
WHICH OF THESE BEST DESCRIBES YOU?
HOW DO PLAN ON USING THIS DATA?
DO YOU WANT DISCREPANT DATA INCLUDED?
DO YOU WANT DIFF AND STEP DATA INCLUDED?
IN WHAT FORMAT SHOULD THE DATA BE RETURNED?
ANY ADDITIONAL COMMENT AND/OR QUESTIONS?
 
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484