tokens: Acknowledgments We thank Daniel Bardin for his help with the Observatoire de Haute Provence (OHP, France) observations; OHP, IUCAA Observatory (India) and Chandra Himalayan telescope (India) for attribution of observing time; and Programme National de Plantologie (PNP, France) for support. This work was partly supported by CNES, in relation to observations of MIDAS on the Rosetta mission and to measurements with PROGRA2 instruments on parabolic flights on A300-ZeroG. Support for HST comet observations in program numbers GO13863 and 144261 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy Incorporated, under NAS5-26555.
ner_tags: O O O B-Person I-Person O O O O O B-Observatory I-Observatory I-Observatory I-Observatory B-Observatory B-Location O B-Observatory B-Observatory I-Observatory O O B-Telescope I-Telescope I-Telescope B-Location O O O O O O B-Grant I-Grant I-Grant I-Grant B-Grant B-Location O O O O O O O O B-Organization O O O O O B-Instrument O O B-Mission I-Mission O O O O B-Instrument O O O O O B-Mission O O B-Telescope O O O O O B-Grant O B-Grant O O O B-Organization O O O O O B-Organization I-Organization I-Organization I-Organization O O O O O B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization I-Organization O B-Grant