ID                   = CDS/P/Venus/Magellan/Microwave-Emissivity-4641m
client_category      = Solar system/Venus
hips_initial_fov     = 180
hips_initial_ra      = 0
hips_initial_dec     = +0
creator_did          = ivo://CDS/P/Venus/Magellan/Microwave-Emissivity-4641m
hips_pixel_bitpix    = 16
data_pixel_bitpix    = 16
hips_sampling        = bilinear
hips_overlay         = mean
hips_hierarchy       = median
hips_creator         = Fernique P. (CDS)
obs_title            = Venus Magellan Microwave-Emissivity-4641m
obs_collection       = Venus Magellan Global Mosaic
obs_description      = Global Emissivity Data Record (GEDR). The emissivity of a surface is defined as the thermal power emitted by that surface divided by the power emitted by a black body of the same size and at the same physical temperature. The polarization direction is horizontal (E-field tangential to surface), and the emissivity is not corrected for emission angle or surface roughness or tilt. This data set includes all Magellan measurements in which the high-gain antenna followed the nominal look-angle profile, in which the observed emission angle varied from 48 degrees off the local vertical at periapsis (ca. 10N latitude) to 15 degrees off vertical at the 90N and 70S. To make the GEDR images, Magellan radiometer data, in the form of readings of antenna noise temperature, are corrected for antenna sidelobe effects and for emission and absorption by the Venus atmosphere. The component reflected from the surface is modeled as a specular reflection with power reflection coefficient equal to (1 - emissivity). The location and planetary radius at the antenna boresight intercept point are derived from GTDR images and the physical surface temperature is calculated using the adiabatic model of Kliore et al., 1985. The data are then filtered to remove low-frequency instrument calibration errors, and re-sampled at a resolution of about 5x5 kilometers per pixel.
obs_ack              = Magellan Team, (processed by Peter Ford, Gordon Pettengill, Fang Liu, Joan Quigley)
prov_progenitor      = https://planetarymaps.usgs.gov/mosaic/Venus_Magellan_MicrowaveEmissivity_Global_4641m.tif
obs_copyright        = public domain, please cite authors
hips_builder         = Aladin/HipsGen v10.125
hips_version         = 1.4
hips_release_date    = 2019-05-21T06:56Z
hips_frame           = venus
hips_body            = venus
hips_order           = 3
hips_tile_width      = 512
hips_status          = public master clonableOnce
hips_tile_format     = png fits
hips_pixel_cut       = 0.7497 0.9012
hips_data_range      = 0.4689 1.1
hips_pixel_scale     = 0.01431
s_pixel_scale        = 0.04395
dataproduct_type     = image
moc_sky_fraction     = 1
hips_estsize         = 580184
hipsgen_date         = 2017-11-14T17:16Z
hipsgen_params       = in=D:/Venus_Magellan/Venus_Magellan_MicrowaveEmissivity_Global_4641m.fits creator_did=CDS/P/Venus/Magellan/Microwave-Emissivity-4641m mocorder=3 partitioning=4096 -f INDEX TILES PNG
hips_creation_date   = 2017-11-14T17:16Z
hipsgen_date_1       = 2017-11-14T17:16Z
hipsgen_params_1     = in=D:/Venus_Magellan/Venus_Magellan_MicrowaveEmissivity_Global_4641m.fits creator_did=CDS/P/Venus/Magellan/Microwave-Emissivity-4641m mocorder=3 partitioning=4096 -f INDEX TILES PNG
hipsgen_date_2       = 2017-11-14T17:17Z
hipsgen_params_2     = in=D:/Venus_Magellan/Venus_Magellan_MicrowaveEmissivity_Global_4641m.fits creator_did=CDS/P/Venus/Magellan/Microwave-Emissivity-4641m mocorder=3 partitioning=4096 -f INDEX TILES PNG
hips_order_min       = 0
hipsgen_date_3       = 2019-05-21T06:56Z
hipsgen_params_3     = out=/asd-volumes/sc1-asd-volume6/Planets/CDS_P_Venus_Magellan_Microwave-Emissivity-4641m UPDATE
hips_service_url     = https://alasky.cds.unistra.fr/Planets/CDS_P_Venus_Magellan_Microwave-Emissivity-4641m
hips_service_url_1   = https://alaskybis.cds.unistra.fr/Planets/CDS_P_Venus_Magellan_Microwave-Emissivity-4641m
hips_status_1        = public mirror clonableOnce
client_application   = AladinDesktopBeta>=10.040 AladinDesktop>=11.125
moc_type             = smoc
moc_order            = 3
obs_initial_ra       = 0
obs_initial_dec      = +0
obs_initial_fov      = 7.3290376785437985
TIMESTAMP            = 1708674179478