High-performance infrared narrow-bandpass filters for the Indian National Satellite System meteorological instrument (INSAT-3D).
This paper describes the design and manufacture of a set of precision cooled (210 K) narrow-bandpass filters for the infrared imager and sounder on the Indian Space Research Organisation (ISRO) INSAT-3D meteorological satellite. We discuss the basis for the choice of multilayer coating designs and materials for 21 differing filter channels, together with their temperature-dependence, thin film deposition technologies, substrate metrology, and environmental durability performance.
Hawkins
G J
GJ
The University of Reading, Infrared Multilayer Laboratory, School of Systems Engineering, Whiteknights, Reading, Berkshire, RG6 6AY, England, United Kingdom. g.j.hawkins@reading.ac.uk
Sherwood
R E
RE
Barrett
B M
BM
Wallace
M
M
Orr
H J B
HJ
Matthews
K
K
Bisht
S
S