anthony at unihedron.com
Mon Apr 12 14:00:34 UTC 2010
K. Fisher produced this calculation page with formulas:
You may find some helpful information about Naked-Eye Limiting Magnitude
On Mon, 12 Apr 2010 04:23:27 EDT, JPDarkSkies at aol.com wrote:
> The Knightware software used with the SQM-LU offers NELM readings as well
> as Mag/sq ArcSecs.
> Where can I find a clear definition of NELM, what are the units and is
> there a conversion formula from Mags to NELM.
> John Prockter
More information about the sqm