{
  "format": "text/markdown",
  "submitter": "Chenxi Bao at Peking University <2300011608@stu.pku.edu.cn>",
  "body": "Chenxi Bao (PKU), Zhuokai Liu (PKU), Yacheng Kang (PKU) report on behalf of the Interestar Collaboration and the PKU HiTF (High-energy Transients Follow-up) group:\n\nWe observed the field of SN 2026kid (ZTF26aatswhm), discovered and first reported by Yasuo Sano (TNS Discovery Report 300955; T0 = 2026-04-22T14:23:47.00). Observations began on 2026 Apr 24, approximately 2.2 days after the first detection of the SN, using a 13cm optical telescope located in Yanchi, China. We subsequently employed a 28cm optical telescope located in Castillejar, Spain, to continue monitoring SN 2026kid. In total, our observations spanned 3 nights in the Luminance filter and 2 nights in the Red filter.\n\nIn the Luminance- and Red-band exposures, we clearly detect the Type II SN 2026kid in the nearby edge-on spiral galaxy NGC 5907, located at a distance of 16.5 Mpc (Rehemtulla et al.,TNS AstroNote 2026-114). Our observations show that SN 2026kid has brightened since discovery, reaching approximately 16.1 mag in the Luminance band and 15.5 mag in the Red band, indicating continued early-time photometric evolution. Preliminary photometry was derived from image subtraction using pre-explosion reference images, calibrated against nearby field stars, and is reported as approximate AB-equivalent magnitudes, without correction for Galactic extinction.\n\nThe observation log is summarized below:\n\n|    Date    | Start_UT | T_mid - T0 (days) |  Filter   | Exposure (s) | Magnitude (AB) |\n| :--------: | :------: | :---------------: | :-------: | :----------: | :------------: |\n| 2026-04-24 | 18:04:42 |       2.15        | Luminance |      200     | 16.22 +/- 0.02 |\n| 2026-04-26 | 23:00:24 |       4.40        | Luminance |     6600     | 16.11 +/- 0.04 |\n| 2026-04-27 | 20:11:25 |       5.25        | Luminance |     1200     | 16.16 +/- 0.26 |\n| 2026-04-27 | 20:46:12 |       5.29        |    Red    |     3600     | 15.60 +/- 0.16 |\n| 2026-04-29 | 20:18:58 |       7.30        |    Red    |     8400     | 15.42 +/- 0.22 |\n\nFurther analysis and follow-up observations are ongoing.\n\nThe two small-aperture telescopes are operated by the Interestar Collaboration. The PKU HiTF group is dedicated to rapid follow-up observations of high-energy transients.\n",
  "submittedHow": "web",
  "circularId": 44438,
  "subject": "SN 2026kid: Optical follow-up with small-aperture telescopes in Spain and China",
  "eventId": "SN 2026kid",
  "createdOn": 1777640452782
}