INDIA'S FIRST MISSION TO MOON
CHANDRAYAAN - 1
Announcement of Opportunity

Brief technical specification of the payloads:

Terrain Mapping Camera (TMC)

The purpose of this instrument is to generate high-resolution 3-D cartographic map of the moon using stereoscopic cameras. The broad specifications of TMC are given below:

Ground resolution 5 m
Swath 40 km
Spectral Band Panchromatic

Hyper Spectral Imager (HySI)

Uses a wedge filter and an area array detector to obtain the full spectrum information of the target by acquiring image data for mineralogical mapping. The broad specification of HySI are given below:

Ground resolution 80 m
Swath 40 km
Spectral range 400-900µm
No of spectral bands    32
Spectral resolution 15 nm

Lunar Laser Ranging Instrument (LLRI)

The LLRI is used for providing ranging data for determining the accurate altitude of the spacecraft above the lunar surface. The broad specification of LLRI are given below:

Pulse repetition rate    1 Hz
Telescope 15 cm dia, reflective
Pulse-width 10 ns
Vertical resolution 10 m

X-ray Fluorescence Spectrometers

This payload consists of three parts: (a) Low Energy X-ray detector (LEX) to map the abundance of light elements like Mg, Al, Si, Ca, Ti and Fe, (b) High Energy X-ray/ gama-ray detector (HEX) to map the distribution of high atomic number elements over the lunar surface such as 210Pb, 222Rn, U, Th and (c) Solar X-ray Monitor (SXM) to continuously measure the flux of solar X-rays. The characteristics of X-ray payloads are given in Table below:

  LEX HEX SXM
Energy range 0.5 - 10 keV 10 - 200 keV 2 - 10 keV
Energy resolution(FWHM)   8% at 1.5 keV 
4% at 6 keV
5% at 60 keV 5% at 6 keV
Field of View (FOV) 5° x 5° 10° x 10° 90°
Spatial resolution 9 km 18 km --