creator_did = ivo://CDS/P/VISTA/VVV/DR4/ColorJYZ obs_title = VISTA DR4 ColorJYZ obs_collection = VISTA DR4 ColorJYZ obs_description = The public ESO near-IR variability survey (VVV) scanned the Milky Way bulge and an adjacent section of the mid-plane where star formation activity is high. The survey took 1929 hours of observations with the 4-metre VISTA telescope during five years (2010-2014), covering ~10^9 point sources across an area of 520 deg^2, including 33 known globular clusters and ~350 open clusters. The final product is a deep near-IR atlas in five passbands (0.9-2.5 microns) and a catalogue of more than 10^6 variable point sources. Unlike single-epoch surveys that, in most cases, only produce 2-D maps, the VVV variable star survey will enable the construction of a 3-D map of the surveyed region using well-understood distance indicators such as RR Lyrae stars, and Cepheids. The VISTA Variables in the Via Lactea (VVV) survey fourth data release (DR4) provides VISTA tile images and source lists in ZYJHKs filters, processed by the Cambridge Astronomical Survey Unit (CASU), for a total sky coverage of 560 square degrees. DR4 contains science data products from observations in the period 1 October 2013 - 15 October 2015, and also science data products from observations in September 2010 to September 2013 not included in the previous release. hips_creator = Buga M. (CDS) , Boch T. (CDS) hips_copyright = CNRS/Unistra obs_ack = Based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme 179.B-2002 prov_progenitor = ESO bib_reference = 2010NewA...15..433M bib_reference_url = https://ui.adsabs.harvard.edu/?#abs/2010NewA...15..433M obs_copyright = ESO obs_copyright_url = https://www.eso.org/sci/observing/policies/publications.html client_category = Image/Infrared/VISTA/VVV #DR4 contains science data products from observations in the period 1 October 2013 – 15 October 2015, and also science data products from observations in September 2010 to September 2013 not included in the previous release. t_min = 55440 t_max = 57310 obs_regime = Infrared #J Wavelength 1.252 ; Width 0.172 #Z Wavelength 0.877 ; Width 0.097 #Y Wavelength 1.020 ; Width 0.093 em_min = 0.828e-6 em_max = 1.338e-6 hips_builder = Aladin/HipsGen v10.123 + Python script for RGB hips_version = 1.4 hips_release_date = 2019-05-05T07:39Z hips_frame = equatorial hips_order = 11 hips_tile_width = 512 #hips_service_url = ex: http://yourHipsServer/VISTA VVV DR4 ColorJYZ hips_status = public master clonableOnce hips_pixel_scale = 5.591E-5 dataproduct_type = image hips_rgb_red = HIPS_J [4480.0 NaN 6748.0 Linear] hips_rgb_green = HIPS_Y2 [980.0 NaN 2016.0 Linear] hips_rgb_blue = HIPS_Z [250.0 NaN 1136.0 Linear] moc_sky_fraction = 0.01373 hips_estsize = 901929377 hipsgen_date = 2017-12-17T16:38Z hipsgen_params = inRed=/raid10/VISTA_VVV/HIPS_J inGreen=HIPS_Y2 inBlue=/raid10/VISTA_VVV/HIPS_Z "cmRed=1120 1687" "cmGreen=490 1008" "cmBlue=125 568" out=HIPS_VISTA_ColorJYZ_new creator_did=CDS/P/VISTA/DR4/ColorJYZ color=png maxthread=16 method=first -f RGB hips_creation_date = 2017-12-17T16:38Z hips_hierarchy = first hips_tile_format = png hipsgen_date_1 = 2017-12-18T11:42Z hipsgen_params_1 = inRed=/raid10/VISTA_VVV/HIPS_J inGreen=HIPS_Y2 inBlue=/raid10/VISTA_VVV/HIPS_Z "cmRed=1120 1687" "cmGreen=490 1008" "cmBlue=125 568" out=HIPS_VISTA_ColorJYZ_new creator_did=CDS/P/VISTA/DR4/ColorJYZ color=png maxthread=16 method=first -f RGB hips_initial_fov = 20.0 hips_initial_ra = 269.2950203 hips_initial_dec = -29.9877217 hips_order_min = 0 dataproduct_subtype = color hipsgen_date_2 = 2019-05-05T07:39Z hipsgen_params_2 = out=/asd-volumes/sc1-asd-volume10/VISTA/VVV_DR4/VISTA-VVV-DR4-ColorJYZ UPDATE hipsgen_date_3 = 2020-02-05T12:55 hipsgen_params_3 = rgb = astropy_viz_rgb(r, g, b, (1060, 452, 98), (2800, 1600, 1060), stretch='asinh', scales=None)