FUNCTION fHtmLookupEq

Returns 20-deep HTMid of a given Equatorial point (@ra,@dec).

Sample call to get the HTMid of ra=185°, dec=0°:
SELECT dbo.fHtmLookupEq(185,0) => 10997281067137

Name Type Length inout pnum

@ra float 8 input 1

@dec float 8 input 2

bigint 8 output 1