Abstract
The Terrain Mapping Camera (TMC) on India’s first satellite for lunar exploration, Chandrayaan-1, is for generating high-resolution 3-dimensional maps of the Moon. With this instrument, a complete topographic map of the Moon with 5 m spatial resolution and 10-bit quantization will be available for scientific studies. The TMC will image within the panchromatic spectral band of 0.4 to 0.9 Μm with a stereo view in the fore, nadir and aft directions of the spacecraft movement and have a B/H ratio of 1. The swath coverage will be 20 km. The camera is configured for imaging in the push broom-mode with three linear detectors in the image plane. The camera will have four gain settings to cover the varying illumination conditions of the Moon. Additionally, a provision of imaging with reduced resolution, for improving Signal-to-Noise Ratio (SNR) in polar regions, which have poor illumination conditions throughout, has been made. SNR of better than 100 is expected in the ±60° latitude region for mature mare soil, which is one of the darkest regions on the lunar surface. This paper presents a brief description of the TMC instrument.
Similar content being viewed by others
References
Lucey P G, Spudis P D, Zuber M, Smith D and MalaretE 1994 Topographic — Compositional Units on the Moon and the Early evolution of the lunar crust;Science 266 1855–1858.
Stertel D, Lucey P G and Gillis J J 2004 Near- Infrared Spectral Properties of selected Nearside and Farside sites;Lunar and Planetary Science XXXV (CD Rom).
Tompkins S and Pieters C M 1999 Mineralogy of the lunar crust: Results from Clementine;Meteoritics Planet. Sci. 34 25–41.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kiran Kumar, A.S., Roy Chowdhury, A. Terrain mapping camera for Chandrayaan-1. J Earth Syst Sci 114, 717–720 (2005). https://doi.org/10.1007/BF02715955
Issue Date:
DOI: https://doi.org/10.1007/BF02715955