The science data obtained by 2-μm Camera (IR2)
onboard the AKATSUKI (also known as Venus Climate Orbiter and PLANET-C) spacecraft
are provided on this page.
Instrument Overview
IR2 utilizes the atmospheric windows at wavelengths of 1.74, 2.26, and 2.32 μm;
the first two suffer only CO2 absorption,
while the last one contains a CO absorption band.
At these wavelengths the outgoing infrared radiation originates from the altitudes 35 -- 50 km.
geometry information (latitude, longitude, local time, phase angle, incidence angle, emission angle, azimuthal angle) at the center of each pixel.
Level 3 (l3b, l3bx)
calibrated, physical values at equally spaced longitude-latitude grid in NetCDF format, derived from l2b data (l3b), and pointing corrected geometry information at the center of each pixel (l3bx).
Cloud Motion Vector (CMV)
CMVs at equally spaced longitude-latitude grid in NetCDF format obtained by using l3b data.
File Naming Convention
Filename is in "CAM_DATE_TIME_KIND_LEVEL_VER.EXT" format.
CAM
Name of the camera: ir2 for IR2.
DATE
date in UTC when image taken at in "YYYYMMDD" format, where YYYY is four-digit year (2010 -- 20??), MM is two-digit month (01 -- 12), and DD is two-digit day (01 -- 31): e.g., 20151211 for 2015-12-11.
TIME
time in UTC when image taken at in "hhmmss" format, where hh is two-digit hour (00 -- 23), mm is two-digit minutes (00 -- 59), and ss is two-digit seconds (00 -- 60): e.g., 123704 for 12:37:04.
KIND
kind of filter or image type: 174 for 1.74 μm filter, 226 for 2.26 μm filter, 232 for 2.32 μm filter, 202 for 2.02 μm filter, 165 for 1.65 μm filter, and drk for dark image.
LEVEL
level of product: l1b, l2b, l3b, l3bx, and geo.
VER
version string: v10 for "version 1.0".
EXT
extension that represents file type: fit for FITS file, jpg for JPEG file, png for PNG file, lbl for PDS3 label file, and nc for NetCDF file.