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Tutorial 4: Skymap and DECam

In this tutorial we show how cartosky can interface with different astronomical surveys and instruments. Here, we specifically examine some of the features for the Dark Energy Survey (DES; DES Collaboration 2005) and the Dark Energy Camera (DECam; Flaugher et al. 2015).

We start by importing several classes from the skymap module and setting a few constants that we will use in this example. By this point, these modules and classes should be familiar.

When plotting DES data, it is often convenient to use an inset colorbar placed between the SPT and Stripe82 regions. This is demonstrated with DESSkymap below.

We have implemented several tools to plot the DECam focal plane. The first uses a quick and dirty scatter plot. Beware, the scatter points do not scale if the figure or axis is resized!

The second plotting uses a much more accurate (but slower) PolygonCollection to represent the focal plane at CCD level.

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