Thorpe T E
Appl Opt. 1973 Aug 1;12(8):1775-84. doi: 10.1364/AO.12.001775.
The large volume of picture data produced by the Mariner 9 Television Experiment, in addition to providing a description of the planet Mars, emphasizes the need for in situ verification of camera performance. Such data provide the basis for initial quantitative image interpretation by confirmation of the relevance of preflight measurement. This information must be the result of planned calibration sequences rather than extraction from nominal mission photography. A lack of sufficient numbers of frames restricted Mariner camera verifications to only limited operational modes under optimal conditions and required significant extrapolation over the duration of the mission. The evidence does suggest that measurable photometric changes occurred, whereas agreement with preflight data is observed for other parameters.
水手9号电视实验产生的大量图像数据，除了提供对火星的描述外，还强调了对相机性能进行实地验证的必要性。这些数据通过确认飞行前测量的相关性，为初步定量图像解释提供了基础。此信息必须是计划校准序列的结果，而非从名义任务摄影中提取。由于帧数不足，水手号相机的验证仅限于最佳条件下的有限操作模式，并且需要在任务持续期间进行大量外推。证据确实表明发生了可测量的光度变化，而在其他参数方面则观察到与飞行前数据相符。
