On Tue, Aug 6, 2013 at 12:40 AM, Scott Martin <scott@on-sight.com> wrote:

Two questions: - How do I convert spectro readings to something useful eg. density measurements?

On my website (Calc section) I have Excel spreadsheets that perform many spectral conversions, including density. If instead you want to "roll your own," the tables needed to perform density calculations may be found in ANSI CGATS.5-1993 (or probably a newer revision). Bruce -- Bruce J. Lindbloom bruce@brucelindbloom.com http://www.brucelindbloom.com