Users seeking to obtain a copy of every single Target Pixel File (TPF) for a given K2 Campaign may now retrieve the data in bundles of tar archive files from the following url at MAST:
http://archive.stsci.edu/missions/k2/target_pixel_files/bundles/
By grouping the TPFs into larger bundles, users will tend to experience faster data transfers and have a more convenient way of verifying that all files have been transferred. See the README file in the directory for more information. Warning: the K2 pixel data amounts to more than 3 terabyte!