creator_did          = ivo://CDS/P/Skymapper/DR4/r
hips_creator         = Boch T. (CDS)
hips_copyright       = CNRS/Unistra
hips_license         = ODbL-1.0

obs_title            = SkyMapper DR4 r band
obs_collection       = SkyMapper
obs_description      = SkyMapper Southern Survey (SMSS) fourth data release (DR4) covers 26,000 deg2 in six optical filters (u, v, g, r, i, z) from over 400,000 images acquired by the 1.3 m SkyMapper telescope between 2014-03 and 2021-09. The 6-band sky coverage extends from the South Celestial Pole to Dec = +16° , with some images reaching Dec ∼ +28°. In contrast to previous DRs, we include all good-quality images from the facility taken during that time span, not only those explicitly taken for the public Survey. From the image dataset, we produce a catalogue of over 15 billion detections made from ∼ 700 million unique astrophysical objects. The typical 10σ depths for each field range between 18.5 and 20.5 mag, depending on the filter, but certain sky regions include longer exposures that reach as deep as 22 mag in some filters. HiPS made by CDS from deep and shallow images, rejecting images with strong background variation. 
obs_ack              = The national facility capability for SkyMapper has been funded through ARC LIEF grant LE130100104 from the Australian Research Council, awarded to the University of Sydney, the Australian National University, Swinburne University of Technology, the University of Queensland, the University of Western Australia, the University of Melbourne, Curtin University of Technology, Monash University and the Australian Astronomical Observatory. SkyMapper is owned and operated by The Australian National University's Research School of Astronomy and Astrophysics. The survey data were processed and provided by the SkyMapper Team at ANU. The SkyMapper node of the All-Sky Virtual Observatory (ASVO) is hosted at the National Computational Infrastructure (NCI). Development and support of the SkyMapper node of the ASVO has been funded in part by Astronomy Australia Limited (AAL) and the Australian Government through the Commonwealth's Education Investment Fund (EIF) and National Collaborative Research Infrastructure Strategy (NCRIS), particularly the National eResearch Collaboration Tools and Resources (NeCTAR) and the Australian National Data Service Projects (ANDS).
prov_progenitor      = https://dx.doi.org/10.25914/5M47-S621
bib_reference        = 2024PASA...41...61O
bib_reference_url    = https://ui.adsabs.harvard.edu/abs/2024PASA...41...61O/abstract
obs_copyright        = Australian National University
#obs_copyright_url   = URL to copyright page of the original data

t_min                = 56731
t_max                = 59473

obs_regime           = Optical
# https://svo2.cab.inta-csic.es/svo/theory/fps/index.php?id=SkyMapper/SkyMapper.r&mode=browse&gname=SkyMapper&gname2=SkyMapper#filter
em_min               = 4.95760e-7
em_max               = 7.23553e-7


client_category      = Image/Optical/Skymapper/DR4


hips_builder         = Aladin/HipsGen v12.135
hips_version         = 1.4
hips_release_date    = 2025-06-23T16:48Z
hips_frame           = equatorial
hips_order           = 10
hips_order_min       = 0
hips_tile_width      = 512
hips_status          = public master clonableOnce
hips_tile_format     = png fits
hips_pixel_bitpix    = -32
hips_pixel_cut       = -0.1053 43.77
hips_initial_ra      = 264.024714
hips_initial_dec     = -37.3665812
hips_initial_fov     = 300
hips_pixel_scale     = 0.229
dataproduct_type     = image
moc_sky_fraction     = 0.6354
hipsgen_date         = 2025-06-01T23:30Z
hipsgen_params       = in=data.fits/r id=CDS/P/Skymapper/DR4/r out=hips/r bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 allSKY
data_pixel_bitpix    = -32
hips_sampling        = bilinear
hips_overlay         = overlayMeanMax mergeOverwriteTile treeMean
hips_creation_date   = 2025-06-01T23:30Z
hips_data_range      = -1067 3187
hips_data_minmax     = -2984 41526
hipsgen_date_1       = 2025-06-21T23:01Z
hipsgen_params_1     = in=data.fits/r id=CDS/P/Skymapper/DR4/r out=hips/r bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 TILES
hipsgen_date_2       = 2025-06-23T09:00Z
hipsgen_params_2     = in=data.fits/r id=CDS/P/Skymapper/DR4/r out=hips/r bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 "pixelCut=-0.10532680153846741 43.77300262451172 sqrt" PNG
hips_estsize         = 12592841547
hips_nb_tiles        = 21337412
hipsgen_date_3       = 2025-06-23T16:48Z
hipsgen_params_3     = in=data.fits/r id=CDS/P/Skymapper/DR4/r out=hips/r CHECKCODE
hips_check_code      = png:1421103607 fits:3266924066