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Advances in Astronomy
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2010
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Article
/
Tab 3
/
Research Article
Multiple Depth DB Tables Indexing on the Sphere
Table 3
Parameters for the HTM and HEALPix pixelization used in the tests.
/
Area
Rows/Pix.
Bytes
(arcmin
)
HTM
6
32,768
89,290
2
8
524,288
283
5,580
3
10
8,388,608
18
348
3
12
134,217,728
1
21
4
HEALPix
6
49,152
59,526
2
8
786,432
189
3,720
3
10
12,582,912
12
232
3
12
201,326,592
0.7
14
4
(deg
);
additional disk storage per row needed.