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Data Analysis Blog Posts

Aaron Price
Aaron Price's picture
Joined: 2010-05-07

Just in case you haven't noticed it, Grant Foster has been writing a series of blog posts about data analysis with AAVSO data. They are very well written and easy to read and follow for someone new to data analysis. His most recent post is about ways of looking for period change in data.

The blog post is titled "Skin a Cat" and is linked here.

Grant is a former employee of the AAVSO in the 80's and 90's and he occasionally appears at AAVSO meetings where he gives talks on the subject. He designed many of the algorithms still in use today for period analysis in variable star data, such as WWZ and CLEAN. He also wrote the first versions of software the AAVSO gave out for implementing those routines. You can now run the analysis using David Benn's excellent, and free, software called VStar. We have a short tutorial for how to use VStar here.

5-star analysis tutorial page, VStar docs
David Benn
David Benn's picture
Joined: 2010-07-29

Hi Aaron, all

I was just talking about the 5-star tutorial in the software development forum.

I notice that the 5-star analysis page has some links that need updating, e.g.

Other than this, I am also acutely aware that VStar needs a "documentation boost". This is on the TODO list.



David Benn

RebeccaTurner's picture
Joined: 2010-03-26

Hi David,

I fixed the VStar link and added text explaining that the simulator requires a CS login. I also made a personal note that we may want to move the simulator over to the AAVSO site when time allows.

Thanks for the comments!

AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484