K2mosaic

v3.0.2 fixes a number of minor bugs: 22, 23, 24, 25.

- `k2mosaic tpflist {{CAMPAIGN}} {{CHANNEL}}` lists all the Target Pixel Files (TPFs) for a given campaign and channel.
- `k2mosaic mosaic {{TPF_LIST}}` takes a list of TPF paths/urls and turns them into a mosaicked image (one FITS file per cadence and channel).
- `k2mosaic video {{MOSAIC_LIST}}` takes a list of mosaics produced in the previous step and collates them into an MPEG-4 movie or animated gif.

This is also the first version to be accompanied by sphinx-powered documentation, hosted at [http://k2mosaic.geert.io](http://k2mosaic.geert.io).

$ k2mosaic --help
usage: k2mosaic [-h] [-d PATH] campaign channel cadence

Creates a mosaic of all K2 target pixel files in a given channel during a
single cadence.

positional arguments:
campaign Campaign number.
channel Channel number (1-84).
cadence Cadence number.

optional arguments:
-h, --help show this help message and exit
-d PATH, --data_store PATH
Path to the directory that contains a mirror of the
target pixel files directory in the K2 data archive,
i.e. a directory that contains a mirror of http://arch
ive.stsci.edu/missions/k2/target_pixel_files/.

This tool will look for data in the directory specified by the --data_store
parameter. If that fails, it will look inside the directory specified by the
$K2DATA environment variable. If this fails as well, then the data will be
downloaded from the archive on the fly.