Next: Phase 2 Program Scheduling
Up: Technical Justification
Previous: Correlator configuration
Contents
The following is a list of additional user settings that require a brief discussion so that the technical assessors can be sure that the choice is justified. A free-format box appears for each.
- Non-Nyquist mosaic sampling: Non-Nyquist values are usually used when the scientific goal is to cover a large survey area and large-scale structures are not being observed.
- Single polarization: Dual polarization is more usual and single polarization only used when the highest spectral resolution is required.
- Low max elevation: Sources with low declinations will suffer large atmospheric attenuation and be difficult to schedule because of limited time above the horizon.
- User-defined calibration: As the observatory guarantees appropriate calibration without user input, this must be rigorously justified.
- Override of OT's sensitivity-based time estimate: This may be necessary if you want to monitor a source over a certain time span or if your source has a complicated structure but the sensitivity-based time estimate does not allow for sufficient
-coverage. You must give a detailed justification for the time override, and explain how the new time estimate was calculated. The time override must include calibrations and overheads.
- Time-constrained observing: These imply significant constraints on the scheduling of all ALMA projects and must therefore be fully justified.
Next: Phase 2 Program Scheduling
Up: Technical Justification
Previous: Correlator configuration
Contents
The ALMA OT Team, 2017 Dec 18