The surface density is the number of objects per square degree. The Max. surface density is the maximum number of objects per square degree that REFNET will report. The algorithm for achiving the requested density is too simple-minded and needs to be improved. Currently, it sorts all the objects found in the region by blue magnitude and keeps only enough of the brightest to achieve the density criteria. The sort algorithm tends to leave objects of equal magnitude in their original order (catalog order is by increasing RA) so when low densities are selected, all the objects tend to have the lowest RA. In really pathological situations all the selected stars will be on one side of the search region.
© Lowell Observatory 2008
Contacts: Ted Bowell and Bruce Koehn
|Last modified: 2008 April 15|