Current Status

Telescope status

  • The windscreen of telecope has not been available since April 2017. We recommand for user to prepare backup targets to avoid a strong wind effect.
  • The primary mirror coating is planned from Oct. 2 to Dec. 13 in S17B.
    (cf. see the reflectivity degradation of current primary mirror in UM report.)

Instrument status

  • HiCIAO is not available from S18A.
  • Suprime-Cam is not available from S17B.
  • Hyper Suprime-Cam (HSC) is available under a "shared-risk" mode in S18A.
  • VAMPIRES can be operated simultaneously with CHARIS/SCExAO NIR observations.

User support

  • A new observing planning tool, hskymon, is opened. It is useful for checking target visibility, finding standard star, checking finding chart, searching AO guide stars, etc. (2017/7/11)

General enquiries may be directed to Dr. Tae-Soo Pyo (

01 August, 2017

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