NASA NTRS · 19750007876
Sensitometric data for earth resources film
Abstract
Sensitometry is applied to all photographic earth resources mission film processing. The exposure is made using an intensity modulated sensitometer with a 2850 K source filtered to produce a 5500 K spectral distribution. In addition, any filters used on the sensor are included in the sensitometer filter pack in order to accurately simulate the exposure conditions. The modulator consists of a continuous carbon wedge and a 20-step carbon step tablet.
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Perry, L.. 1972-01-01. Sensitometric data for earth resources film. https://ntrs.nasa.gov/citations/19750007876
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