Data Set Overview :  Hayabusa is a Japanese space mission to the asteroid 25143 Itokawa, launched on May 9, 2003 and with a planned return to Earth in June 2010. The Asteroid Multi-band Imaging Camera (AMICA) is a charge-coupled device (CCD) camera with a refractive telescope producing an effective field of view of 5.83 x 5.69 degrees. In the course of the mission, AMICA obtained 1662 images which are included in this data set. For information about the design, performance and calibration of the AMICA camera, see Ishiguro et al. (2010).   Data file types and contents :  The data directories and their contents are as follows:  data/yyyymmdd - The flight images are FITS files and are grouped into daily directories named with the date the images were obtained. The file naming convention is [T][C]_[nnnnnnnnnn]_[filter].fit, where [T] is the data type (S for scientific and N for navigation), [C] is the name of the instrument (T for AMICA), [nnnnnnnnnn] is the mission elapsed time when the images were generated on the digital signal processing unit, and [filter] is the filter identifier.  data/preflight - The pre-flight flat field images, one for each of the eight filters, are FITS images with the file naming convention flat_[filter].fit, where [filter] is the filter identifier. The flats for the ul, b, v, x, zs, and wide filters were obtained using an integrating sphere at NEC Toshiba Space Systems Ltd. at room temperature (around 30 degrees C). The flats for the w and p filters were obtained using a portable integrating sphere. For additional information about the pre-flight and in-flight flats see Ishiguro et al. (2010).  data/filters - The filter profiles in transmittance vs. wavelength for the seven narrow-band filters have filenaming convention [filter].tab. A filter profile for the wide filter was not supplied by the project.  data/parameters - Two files listing illumination and geometry parameters for the AMICA images are included here, one with parameters calculated from the Hayabusa LIDAR data, and one with the same parameters calculated from the Itokawa stereophotoclinometry provided by Bob Gaskell. Both sets of parameters were calculated by Olivier S. Barnouin-Jha. Each file contains parameters for a subset of the images.  Geometry keywords in the image labels -------------------------------------  The parameters given in data/parameters are also given in keywords in the labels of the individual images. Since the stereophotoclinometry-derived parameters are more accurate than the LIDAR-derived parameters, the stereophotoclinometry-derived parameters are used in the labels for those images which have them. The LIDAR-derived parameters are used only for those images which lack stereophotoclinometry-derived parameters. For some images, it was not possible to calculate the parameters, and the geometry keywords don't appear in their labels.  Alignment comparison --------------------  Two documents prepared by Olivier Barnouin-Jha, alignment_lidar.pdf and alignment_stereo.pdf, show the alignment of the Itokawa shape model with the AMICA images, based on LIDAR and the stereophotoclinometry respectively, and demonstrate the reliability of the lidar-based and stereophotoclinometry-based geometry parameters. These documents are provided in the document directory.   Reference :  Ishiguro, M., R. Nakamura, D.J. Tholen, N. Hirata, H. Demura, E. Nemoto, A.M. Nakamura, Y. Higuchi, A. Sogame, A. Yamamoto, K. Kitazato, Y. Yokota, T. Kubota, T. Hashimoto, and J. Saito, The Hayabusa Spacecraft Asteroid Multi-Band Imaging Camera: AMICA, Icarus (2010), doi: 10.1016/j.icarus.2009.12.035, 2010.

Confidence Level Overview : Image time uncertainty: The UT times listed in the FITS headers are end-of-exposure times and have an uncertainty of +/- 12 seconds due to the periodicity of the control and operation of the analog signal processing unit. This uncertainty applies also to the start and stop times listed in the PDS label, which were derived from the end times and exposure times in the FITS header.  Missing image times: Observation times could not be obtained for three images, 20040106/ST_0670995301_b.fit, 20040601/ST_1076261287_b.fit, and 20040526/ST_1059672071_b.fit. The times in the FITS header and PDS label were determined by interpolating between the times of the images taken immediately before and after.  Dual target images: Four images obtained on August 29, 2005 contain both the asteroid 25143 Itokawa and the star Alpha Leonis. These images are ST_2332479491_v.fit, ST_2332498721_wide.fit, ST_2332786728_wide.fit, and ST_2332825189_v.fit.