There are two main ways to access this:

1. Access URL1 and select the observation images, catalog, observation view (FOV), etc. you want to display. For more detailed usage, please refer to User Guide.
2. Edit the parameters of URL2 to access it.

URL

1. https://darts.isas.jaxa.jp/app/judo2/
2. https://darts.isas.jaxa.jp/app/judo2/?center_lng={}&center_lat={}&zoom=0&coord={}&selectedLayer={}&Base={}&Top={}&TopAlpha={}&GraphicAlpha={}

URL parameter

• center_lat, center_lng: Specify the center coordinates to display. Example: 35.6895, 139.6917

• zoom: Zoom ratio. -2 (farthest away) ~ The larger the number, the closer it gets.

• coord: coordinate system. galactic or J2000

• selectedLayer: Specify the graphic (field of view or catalog) to be overlaid on the observation image. Multiple (any number) can be specified, separated by commas.

  Example: ASCA_SIS_FOV, ASCA_GIS_FOV, ASCA_GIS64_FOV, CHANDRA_FOV_SIMPLE, HITOMI_SXS_FOV, HITOMI_SXI_FOV, HITOMI_HXI_FOV, NICER_FOV, NuSTAR_FOV, SUZAKU_PUBLIC_FOV, XMM_FOV, GINGA_LAC_FOV, AKARI_IRC_FOV, HALCA_OBSERVATION_FOV, XRISM_RESOLVE_PUBLIC_FOV, XRISM_RESOLVE_PROTECTED_FOV, XRISM_XTEND_PUBLIC_FOV, XRISM_XTEND_PROTECTED_FOV, SWIFT_BAT_PROG_CATALOG, CHANDRA_CSC2_CATALOG, MAXI_PROG_CATALOG, SWIFT_XRT_PROG_CATALOG, XMM_DR8_CATALOG, SIMBAD_PROG_CATALOG, AKARI_FIS_CATALOG, AKARI_IRC_CATALOG, AKARI_IRC_NEP_WIDE_CATALOG, AKARI_IRC_NEP_DEEP_CATALOG, AKARI_IRC_LMC_CATALOG

• Base, Top: Specify only one observation image to be displayed in the background and one in the front.

  Example: AL_P_Fermi_color, INTEGRAL_IMAGE, SWIFT_BAT_IMAGE, ASCA_SIS_IMAGE, ASCA_GIS_IMAGE, ASCA_GIS64_IMAGE, Chandra_IMAGE, HITOMI_SXS_IMAGE, HITOMI_HXI_IMAGE, MAXI_GSC_IMAGE_HIGHC, MAXI_GSC_IMAGE, MAXI_GSC_DAILY, MAXI_GSC_WEEKLY, MAXI_GSC_MONTHLY, MAXI_GSC_YEARLY, MAXI_SSC_IMAGE, MAXI_SSC_IMAGE_CONTBIN, AL_P_RASS, SUZAKU_IMAGE, nasa_heasarc_P_Swift_XRT_exp, AL_P_XMM_PN_color, XRISM_RESOLVE_IMAGE, XRISM_XTEND_IMAGE, AL_P_GALEXGR6_AIS_color, ABL_P_DSS2_color, SDSS9_color, CDS_P_Mellinger_color, CDS_P_VISTA_VVV_DR4_ColorJYZ, CDS_P_PanSTARRS_DR1_color_z_zg_g, CDS_P_DM_flux_color_Rp_G_Bp_I_345_gaia2, ov_gso_P_WHAM, AKARI_IRC_IMAGE, AL_P_AKARI_FIS_Color, AKARI_FIS_Image_AllSky_Map_forBrightSource, BICE_IMAGE, IRTS_IMAGE, AL_P_2MASS_color, AL_P_allWISE_color, ESAVO_P_Herschel_color, AL_P_GLIMPSE360, AL_P_COHRS, CDS_P_CO, CDS_P_NVSS, ov_gso_P_GLEAM_170_231, Haslam408, Constellations5, Constellations1, Constellations2, Constellations3, Constellations4, Constellations6

• TopAlpha: Opacity of the front image. 0 (invisible) to 100 (opaque)

• GraphicAlpha: Opacity of the graphic overlaid. 0 (invisible) to 100 (opaque)