A Comprehensive Model of All Astronomical Imaging Ever Taken

author: David W. Hogg, Center for Cosmology and Particle Physics, Department of Physics, New York University (NYU)
produced by: NASA Ames Video and Graphics Branch
published: June 27, 2012,   recorded: October 2011,   views: 3147

See Also:

Download slides icon Download slides: cidu2011_hogg_astronomical_imaging_01.pdf (2.8┬áMB)

Help icon Streaming Video Help

Related Open Educational Resources

Related content

Report a problem or upload files

If you have found a problem with this lecture or would like to send us extra material, articles, exercises, etc., please use our ticket system to describe your request and upload the data.
Enter your e-mail into the 'Cc' field, and we will keep you updated with your request's status.
Lecture popularity: You need to login to cast your vote.


In astrophysics we are beginning to work with extremely large data sets. However, unlike in most other data-science domains, we have a reasonable handle on the physical processes that generate those data: We have working models that do a fairly good job of describing the quantitative properties of galaxies, stars, and charge-coupled devices. In particular, we have pretty good descriptions of our sources of noise. For these reasons, the most sensitive and accurate measurements being made in astrophysics are made by building highly informed, probabilistic models of the data. I show some examples of scientific discoveries made by modeling data and look to the future, when data sets reach peta-scale and the models have billions of free parameters.

Link this page

Would you like to put a link to this lecture on your homepage?
Go ahead! Copy the HTML snippet !

Write your own review or comment:

make sure you have javascript enabled or clear this field: