{
  "name": "SN2022eyj",
  "publication_approved": true,
  "publication_scope": "Identification of an already-known supernova in a single observing night; not an independently measured appearance or nova discovery.",
  "date": "2022-03-24",
  "frames": 4,
  "integration_seconds": 720,
  "coordinates_deg": [
    169.50230417,
    7.84573889
  ],
  "primary_discovery_coordinates_deg": [
    169.502420833333,
    7.845725
  ],
  "source": "https://www.astronomerstelegram.org/?read=15305",
  "external_finding_chart": "https://www.astronomy.ohio-state.edu/~assassin/followup/asassn-22dt.png",
  "peak_checks": [
    {
      "subset": "complete",
      "channel": 1,
      "source_peak_offset_pixels": [
        0,
        0
      ]
    },
    {
      "subset": "complete",
      "channel": 2,
      "source_peak_offset_pixels": [
        0,
        0
      ]
    },
    {
      "subset": "first_half",
      "channel": 1,
      "source_peak_offset_pixels": [
        0,
        0
      ]
    },
    {
      "subset": "first_half",
      "channel": 2,
      "source_peak_offset_pixels": [
        0,
        0
      ]
    },
    {
      "subset": "second_half",
      "channel": 1,
      "source_peak_offset_pixels": [
        0,
        0
      ]
    },
    {
      "subset": "second_half",
      "channel": 2,
      "source_peak_offset_pixels": [
        1,
        0
      ]
    }
  ],
  "registration": [
    {
      "night": "2022-03-24",
      "train": 6,
      "heldout": 3,
      "heldout_median": 0.1748229827988401,
      "heldout_max": 0.2712102884601093,
      "offset": [
        -0.009212376096826347,
        -0.04852986236893031
      ],
      "status": "retained",
      "scale": 1.0131511688232422
    },
    {
      "night": "2022-03-24",
      "train": 7,
      "heldout": 4,
      "heldout_median": 0.06305259811035177,
      "heldout_max": 0.13685914980195069,
      "offset": [
        0.03460002988717292,
        0.008605360003841156
      ],
      "status": "retained",
      "scale": 1.0024832487106323
    },
    {
      "night": "2022-03-24",
      "train": 8,
      "heldout": 5,
      "heldout_median": 0.07946360912303703,
      "heldout_max": 0.1581138316376153,
      "offset": [
        -0.0015546783127433628,
        -0.024706753293635586
      ],
      "status": "retained",
      "scale": 0.9935572147369385
    },
    {
      "night": "2022-03-24",
      "train": 8,
      "heldout": 5,
      "heldout_median": 0.04498952642133961,
      "heldout_max": 0.2692077003485123,
      "offset": [
        -0.03668713332524476,
        -0.02429035865628748
      ],
      "status": "retained",
      "scale": 0.9664137363433838
    }
  ],
  "evidence": "A distinct local peak near the catalogue position is present in both CFA green channels and both temporal halves. A second peak displaced southeast corresponds to the central host region in the independent ASAS-SN finding chart. The published chart was visually checked for relative source/host geometry, not resampled or used for photometric subtraction.",
  "limitations": [
    "Only4 exposures in one night",
    "No same-session flat; filter unknown; nominal gain101 -20C180s library dark",
    "No calibrated pre-explosion template or host subtraction; no isolated supernova magnitude or temporal appearance measurement",
    "Reconstructed sky pixels correlated by resampling; local-maximum checks are not a formal significance estimate"
  ]
}