Background: Current and near 
          Future
      1. Significant reduction of operation budget from government
      2. Reconfiguration of instruments with wide-field survey type instruments
          • HSC, PFS, ULTIMATE-Subaru will be the main instruments (Queue mode)
                       Reduce the operation cost                        Efficient survey type 
                       • Reduce Users travel costs(3 千千千 )              operation 
                       • Reduce traffics to summit
                       •                                                • Queue mode operation
                          Reduce HP expenses (2千千千)                     •
                       • Increase observer’s role                         Limited number of open-use nights
     Future Operation Modes
                     • No summit attendant
        Full Remote  • Observers at Mitaka/Hilo/Other 
        Observation   sites
                     • SA/Operator at Hilo
                     • Survey (SSP: HSC, PFS, ULTIMATE)
           Queue     • IRD <-> SCExAO/CHARIS or IRCS
           mode      • SA(1)+OSA(1) operation
        Transition….
                                                                        1 
                                                         )            Operator 
                                                        e              at Hilo
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               1 
             Operator
                        1 SA
                                                                             Operation at Mitaka/Hilo
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                                                                    1 
            Operation at summit                                   Operator
                                                                              1 SA
                                                            Operation at Hilo
                            Benefits                                           Con.
                               Reduce workloads of SAs                        Difficulty of troubleshooting
       Full Remote             Reduce summit traffic                          Accommodation/food service in Hilo
                               Reduce travel/HP expenses                      Difficulty of communication with observers
                               Data quality control
                                                                              Needs easy UI for observers (soft wares)
          Queue                Efficient survey observation                   Needs more work for staffs (Queue 
                                                                              Coordinator, FQA staff, IQA by SA)
                               Allow Time Series observation (Cadency, 
                               Variable,...)
    Queue Mode Operation: HSC, PFS, 
    NsIR
    • Currently only HSC since S16A.
     • Open Use (several nights) + HSC SSP (several nights)
     • Based on observational constraints: Seeing, Transparency, Moon phase and 
      separation angle. 
     • Observational block shorter than 100 minutes.
     • 千 SA (1) + OSA (1) operation 
    • PFS operation is planning to do queue mode operation.
    • NsIR platform:  SCExAO <->CHARIS<->IRD  (between PI instruments)
     • IRD requests hour base observational planning.
     • SCExAO/CHARIS necessary very good seeing condition.
     • The switching between instrument is take just a few minutes.
     • Support staff must know how to handle all SCExAO/CHARIS/IRD instruments.