The MMT Observatory (MMTO) will be decommissioning Hectospec and Hectochelle on May 1st, 2026 in order to prepare MMTO for the arrival of ViaSpec. The decommissioning process for both Hectospec and Hectochelle will start on May 1, 2026. Thus, the last scheduled night of observing for either Hectospec or Hectochelle will be no later than April 30th, 2026. Depending on science allocations for the spring of 2026, the last night of observing could potentially be earlier in April.