Marron glacé that a "marron glacé" is a confit marron that is covered in caramel. The 1767 book "L'agronome, ou dictionnaire portatif du cultivateur" claimed that the best marrons came from the Dauphiné region in southeastern France, and contained instructions for preparing marron glacés. Chestnuts are covered with a membrane, known as a pellicle or episperm, which closely adheres to the fruit's flesh and must be removed because of its astringency. Marron nuts have a pellicle which is "superficially attached to the nut", making it easily removable from the fruit. Some chestnuts have two cotyledons usually separated with deep grooves penetrating nearly
Joseph Marron ERIM Marron was part of NASA's Hubble Aberration Recovery Project (HARP) team that "fixed" the Hubble Telescope through the installation of the Corrective Optics Space Telescope Axial Replacement (COSTAR) instrument. His was one of the groups that calculated the error in the mirror from the faulty images using phase retrieval, allowing the corrective optics to be designed. in 1993, still at ERIM, Marron developed a method for holographic laser radar imaging. In 2004, while at Corning, he was elected a Fellow of the Optical Society of America for "contributions to the science of coherent imaging and the invention of holographic