CHRIS acquires a set of up to five images of each target during each acquisition sequence, these images are acquired when Proba-1 is pointing at distinct angles with respect to the target.
CHRIS Level 1A products (supplied in HDF data files, version 4.1r3) include five formal CHRIS imaging modes, classified as modes 1 to 5:
|Mode||Name||Swath||Spectral Bands||Nadir ground sampling distance|
|MODE 1||Full swath width||62 (773nm / 1036nm)||34m @ 556km|
|MODE 2||WATER BANDS||Full swath width||18||17m @ 556km|
|MODE 3||LAND CHANNELS||Full swath width||18||17m @ 556km|
|MODE 4||CHLOROPHYL BAND SET||Full swath width||18||17m @ 556km|
|MODE 5||LAND CHANNELS||Half swath width||37||17m @ 556km|
All Proba-1 passes are systematically acquired according to the current acquisition plan, CHRIS data are processed every day to Level 1A and made available to ESA users.
Observation over a new specific area can be performed by submitting the request to add a new site to the acquisition plan.