Building Earth Observation Cameras

185Pushbroom Imagers

is one of the critical activities for any telescope development. Each mirror is

rst xed to their respective “housing” with blade exures using glue (Figure

6.26). (Later, cameras were xed using different techniques to improve the iso-

lation of the mirror from the structure.) Glue while curing due to shrinkage

can exert stress onto the mirror. Therefore, the area over which the blade is

attached and the thickness of glue (which depends on the gap between the

blade and the mirror surface) have to be carefully chosen. For this purpose,

initial trials are carried on a at mirror of similar mechanical parameters. To

have good ...