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For Users of the Nobeyama 45-m Telescope Open Use Program
Rules for the backup program
The Nobeyama 45-m Telescope started a program called the ''Backup Program''.
This program allows the observers to pass his/her observation time to an alternative low-frequency observation which is adopted as a backup observation when the observer finds it impossible to conduct his/her originally scheduled high-frequency observation due to bad weather. This program provides an advantage to the observers who decide not to carry out their high-frequency observations under adverse weather conditions because they can obtain additional observation time equivalent to the time allocated for the backup observation (Note that additional time is not allocated again in the case that his/her additional time is given to "Backup Program".).
The Backup Program shall be performed by following the instructions below.
- The observer shall decide whether to switch the scheduled observation to a backup observation (or vice versa) on a 3-hour basis counting from the start time of your observation (or you may decide it after checking Tsys or Y-factor).
- The observer shall notify an assistant of his/her intention to use the Backup Program, and the assistant shall notify it to the backup observer.
- The observer can switch to the backup observation only if the backup observation is also allocated to the corresponding time.
The schedule can be consulted at the 45m observing building and the Remote Operation Room in Mitaka Campus.
In case that the observer demanded to observe from the home institute, the observatory send the schedule for backup observations.
- The judge to switch back and forth the priority of observations should be performed every 3 hours after backup observers got a priority (Even if the weather becomes better during backup observations, backup observers can have a prority until 3 hours past).
- When the scheduled time for the next observer has come, the priority is moved to the next observer (not to the backup observer).
When the observations are conducted without the presence of a PI (principal investigator), the PI shall explain the above-mentioned rules to his/her collaborators who carry out the observations so that the backup observation can be performed smoothly.
* In the case of observation at 100 GHz, no good results can be expected under the following conditions:
If you are not an experienced observer, decide whether to use the Backup Program according to these criteria.
- Maximum wind velocity: 10 m/s or greater
- System noise temperature: 1000 K or higher