Mk4 calibrated intensity data from 2004 through early 2006 have been analyzed in an effort to understand instrumental and sky brightness values and variations. Data are calibrated using an opal glass attenuator. Its transmission value has an uncertainty of 30%. Wavelength is set by the quantum ef... Show moreMk4 calibrated intensity data from 2004 through early 2006 have been analyzed in an effort to understand instrumental and sky brightness values and variations. Data are calibrated using an opal glass attenuator. Its transmission value has an uncertainty of 30%. Wavelength is set by the quantum efficiency of the line array detector, RG695 cut on filter, and 950nm cut-off filter. The effective center wavelength is 775nm. Show less
