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- * Link=> https://notebook.community/jibanCat/healpy_object_counts/tutorial/wise_allsky
- Counting objects on Healpix Grids, use WISE catalogue as an example
- I found this method in this Paper (arxiv:1401.0156): Star-galaxy separation strategies for WISE-2MASS all-sky infrared galaxy catalogs
- In this tutorial, we will use the WISE catalogue we got from the irsa website to make a Galaxy Count Map on Healpix grid with healpy (python module for Healpix).
- In the original paper, they used SVM to train a classifier to separate the galaxy objects from star objects in the catalogue. Let's skip the step of training SVM, just apply the query provided by them. They argued the result of this query is empirically almost the same as the training result.
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