mar10cal

mar10cal performs radiometric corrections to images acquired by the Mariner 10 vidicon cameras. MAR10CAL performs a dark curent correction and linearization of Mariner 10 images. Key documents to refer to: MVM 73 TV Subsystem Calibration Report, M. Benesh and M. Morrill, JPL 615-148, 1973. Acquisition and Description of Mariner 10 Television Science Data at Mercury, G.E. Danielson, K.P. Klaasen, J.L. Anderson, Jour. Geophys. Research, Vol. 80, No. 17, pp 2357-2393, 1975 (and other articles in this issue). It should be noted that the flat field and sensitivity fluctuates as a function of vidicon temperature (especially for camera A). The camera heater was not functioning during encounters 2 and 3 and thus these encounters use a different calibration than the 1st encounter. Reliable non-linearity correction is thus available only for encounter 1 images. CAUTION: the program will process the encounter 2 and 3 images but the results are not reliable for any quantitative applications such as albedo measurements (absolute or relative) or photoclinometry. The situation is not hopeless, much effort has gone into deriving a fix for the 2nd and 3rd encounter frames and a future update of mar10cal will incorporate this work.