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Link here. Chief engineer Marc Rayman loves to write about Dawn, and his posts on the Dawn blog are probably the most information-packed of any spacecraft blog I have ever read. Key quote this time:
Dawn’s extensive photographic coverage of the sunlit terrain in early May will include these bright spots. They will not be in view, however, when Dawn spies the thin crescent of Ceres in its next optical navigation session, scheduled for April 10.
The orientation of the spacecraft and asteroid now are such that there is no point taking pictures, as most of the asteroid is in darkness.
Read it all, however. He gives a masterful overview of what is going to happen in the coming months.