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) #hips_copyright = Copyright mention of the HiPS 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 #bib_reference = Bibcode for bibliographic reference #bib_reference_url = URL to bibliographic reference obs_copyright = public domain, please cite authors #obs_copyright_url = URL to copyright page of the original data #t_min = Start time in MJD ( =(Unixtime/86400)+40587 or https://heasarc.gsfc.nasa.gov/cgi-bin/Tools/xTime/xTime.pl) #t_max = Stop time in MJD #obs_regime = Waveband keyword (Radio Infrared Optical UV X-ray Gamma-ray) #em_min = Start in spectral coordinates in meters ( =2.998E8/freq in Hz, or =1.2398841929E-12*energy in MeV ) #em_max = Stop in spectral coordinates in meters 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_service_url = ex: http://yourHipsServer/Venus Magellan Microwave-Emissivity-4641m 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