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

obs_title            = SkyMapper DR4 i 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.i&mode=browse&gname=SkyMapper&gname2=SkyMapper#filter
em_min               = 6.93250e-7
em_max               = 8.65331e-7


client_category      = Image/Optical/Skymapper/DR4


hips_builder         = Aladin/HipsGen v12.132
hips_version         = 1.4
hips_release_date    = 2025-05-20T07:30Z
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
data_pixel_bitpix    = 16
hips_sampling        = bilinear
hips_overlay         = overlayMean mergeOverwrite treeMean
hips_pixel_cut       = 0.0177 19
hips_data_range      = -320.7 957.3
hips_data_minmax     = -195.4 19305
hips_initial_ra      = 264.024714
hips_initial_dec     = -37.3665812
hips_initial_fov     = 300
hips_pixel_scale     = 1.118E-4
s_pixel_scale        = 1.376E-4
dataproduct_type     = image
moc_sky_fraction     = 0.6404
hipsgen_date         = 2024-08-26T08:42Z
hipsgen_params       = in=data/g out=./hips/g id=CDS/P/Skymapper/DR4/g expTime=EXPT_EFF bitpix=-32 cache=./tmp region=3/517 TILES
hips_creation_date   = 2025-04-02T06:52Z
hipsgen_date         = 2025-04-02T06:52Z
hipsgen_params       = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=0/7 frame=equatorial TILES
data_pixel_bitpix    = -32
hips_sampling        = bilinear
hips_overlay         = overlayMeanMax mergeOverwrite treeMean
hips_release_date    = 2025-05-05T15:27Z
hips_creation_date   = 2025-04-02T06:52Z
hipsgen_date_1       = 2025-04-02T06:53Z
hipsgen_params_1     = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=0/6 frame=equatorial TILES
hips_data_minmax     = -195.4 19305
hipsgen_date_2       = 2025-04-03T07:11Z
hipsgen_params_2     = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=0/0 TILES
hipsgen_date_3       = 2025-04-03T08:18Z
hipsgen_params_3     = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=0/1 TILES
hipsgen_date_4       = 2025-04-03T09:06Z
hipsgen_params_4     = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=0/2 TILES
hipsgen_date_5       = 2025-04-03T10:00Z
hipsgen_params_5     = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=0/3 TILES
hipsgen_date_6       = 2025-04-05T02:35Z
hipsgen_params_6     = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=0/4 TILES
hipsgen_date_7       = 2025-04-08T06:16Z
hipsgen_params_7     = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=2 expTime=EXPT_EFF mode=overlayMean25 region=7/85999 TILES
hipsgen_date_8       = 2025-04-08T08:17Z
hipsgen_params_8     = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=5/5375 TILES
hipsgen_date_9       = 2025-04-08T17:33Z
hipsgen_params_9     = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=1/21 TILES
hipsgen_date_10      = 2025-04-10T06:45Z
hipsgen_params_10    = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=8 expTime=EXPT_EFF mode=overlayMean25 region=4/1447 TILES
hipsgen_date_11      = 2025-04-10T07:38Z
hipsgen_params_11    = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 region=2/91 TILES
hipsgen_date_12      = 2025-04-22T12:46Z
hipsgen_params_12    = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=32 expTime=EXPT_EFF mode=overlayMean250 region=5/11390 TILES
hipsgen_date_13      = 2025-04-23T07:11Z
hipsgen_params_13    = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=32 expTime=EXPT_EFF mode=overlayMean25 region=0/8-11 TILES
hipsgen_date_14      = 2025-04-24T22:30Z
hipsgen_params_14    = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=32 expTime=EXPT_EFF mode=overlayMean25 region=0/7 TILES
hipsgen_date_15      = 2025-04-26T23:15Z
hipsgen_params_15    = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=32 expTime=EXPT_EFF mode=overlayMean25 region=0/5 TILES
hipsgen_date_16      = 2025-05-01T00:27Z
hipsgen_params_16    = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=128 expTime=EXPT_EFF mode=overlayMean25 region=0/6 TILES
hipsgen_date_17      = 2025-05-05T10:39Z
hipsgen_params_17    = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=128 expTime=EXPT_EFF mode=overlayMean25 TREE
hipsgen_date_18      = 2025-05-05T15:27Z
hipsgen_params_18    = in=data.fits/i id=CDS/P/Skymapper/DR4/i out=hips/i bitpix=-32 cache=./tmp maxThread=64 expTime=EXPT_EFF mode=overlayMean25 "pixelCut=0.0177 19 sqrt" PNG