Calibration sources: 
Channels 1-10: i) Skylight Reference 
ii) Tungsten Halogen lamp 
iii) Bl-ck level (low black body) 
Channel 11: Two temperature controlled 
black bodies-high andlow whose 
temperature can be set anywhere 
between 0°C to 50°c. 
(f) Digitizing levels: 256 (8 bits) one track of 
14 tracks. 
(g) Output: Each channel recorded on High 
Density Tape Recorder with a 
packing density of 10,000 BPI. 
(h) Annotation; Real time in 36 bit NASA format 
is recorded on one track of the 
High Density Tape Scan line 
number is also recorded for each 
scan. The following information 
for each flight line is logged 
and made available to the user. 
Aircraft Heading 
Aircraft Speed 
Aircraft Altitude 
start and stop time of each 
flight line, 
Acknowledgements s 
Authors wish to extend their thanks to 
It.Col. LRA Narayan and Dr.R.S.Ayyangar for 
their interest and for providing some facilities 
at the site, Our thanks are also due to the 
M=DAS group for their assistance during data 
analysis. We thank Prof.T.Rama Sarma, Indian 
Institute of Science for analysing the sample.