In 2013 we participated in GSoC for the first time, under the umbrella of the Python Software Foundation organization.

Axel Donath (@adonath) developed a robust framework for computing kernels to be used in convolution which has since been included as astropy.convolution in the 0.3 stable release of Astropy: As part of this, Axel also made a number of improvements to the astropy.modeling sub-package. These are some of the big pull requests that were involved in this work (such as #1203, #1251, and #1255)

Axel then continued on to work on developing an initial framework for point spread function (PSF) photometry which is available at https://github.com/astropy/photutils/pull/26 and will soon be included in the photutils affiliated package.

Axel's blog can be found at http://adonath.github.io/

Madhura Parikh (@jdnc) worked on refactoring large parts of the [astroquery] (http://www.astropy.org/astroquery) package - there were many pull requests involved (such as #120, #125, #128, #131, #138, and #139)

This work paved the way towards a first stable release of astroquery, which happened a few months after GSoC ended, and would not have been possible without Madhura's work.

Madhura's blog can be found at http://ping-vyom.blogspot.de