Change cone search argument to radius_arcsec (#9)

tests/lsdb/catalog/test_cone_search.py

@@ -4,15 +4,16 @@
 def test_cone_search_filters_correct_points(small_sky_order1_catalog_cloud):
     ra = 0
     dec = -80
-    radius = 20
+    radius_degrees = 20
+    radius = radius_degrees * 3600
     center_coord = SkyCoord(ra, dec, unit="deg")
     cone_search_catalog = small_sky_order1_catalog_cloud.cone_search(ra, dec, radius).compute()
     print(len(cone_search_catalog))
     for _, row in small_sky_order1_catalog_cloud.compute().iterrows():
         row_ra = row[small_sky_order1_catalog_cloud.hc_structure.catalog_info.ra_column]
         row_dec = row[small_sky_order1_catalog_cloud.hc_structure.catalog_info.dec_column]
         sep = SkyCoord(row_ra, row_dec, unit="deg").separation(center_coord)
-        if sep.degree <= radius:
+        if sep.degree <= radius_degrees:
             assert len(cone_search_catalog.loc[cone_search_catalog["id"] == row["id"]]) == 1
         else:
             assert len(cone_search_catalog.loc[cone_search_catalog["id"] == row["id"]]) == 0
@@ -21,7 +22,8 @@ def test_cone_search_filters_correct_points(small_sky_order1_catalog_cloud):
 def test_cone_search_filters_partitions(small_sky_order1_catalog_cloud):
     ra = 0
     dec = -80
-    radius = 20
+    radius_degrees = 20
+    radius = radius_degrees * 3600
     hc_conesearch = small_sky_order1_catalog_cloud.hc_structure.filter_by_cone(ra, dec, radius)
     consearch_catalog = small_sky_order1_catalog_cloud.cone_search(ra, dec, radius)
     assert len(hc_conesearch.get_healpix_pixels()) == len(consearch_catalog.get_healpix_pixels())