Starting observations

After finishing the tuning, put the antenna in program mode by pushing【PROG】on COSMOS GUI.

Pointing Observations

1. Start observation via [START OBSERVATION]
2. Input pointing offsets
   • for continuum observations
     
     1. Input azimuth and elevation offsets into "DD AZ" and "DD EL" on AZEL_OFFSET window based on the offsets displayed in qlooka.
   • for line observations
     
     1. Select AOS in qlooka.
     2. Set baseline range when a spectrum is shown.
     3. Input azimuth and elevation offsets into "DD AZ" and "DD EL" on AZEL_OFFSET window based on the offsets displayed in scan monitor.
3. Finish pointing when the offsets are close to 0 (or when you are satisfied with the offset).

Note: Positive/negative of the input offsets should be the same as displayed in qlook. 2. Please do not use auto-pointing mode.

Start observations

1. Start observation via [START OBSERVATION]
2. Select AOS in qlooka.
3. Monitor the data in qlook.
4. Observations end automatically or push [STOP] if you want to stop observations.

Autolog

Observation logs, pointing logs, and weather information are automatically recorded with Autolog.

During observations

In the case of strong wind, snowfall, or increase in temperature of spectrometers, please stop your observations.
The following things need special attention:

1. Safety
   Confirm the safety by [webcam] during observations.
2. Antenna mode
   Do not set [STBY] while the antenna is moving. If you want to set [STBY], please confirm that the antenna stops by checking REAL values on Antenna Console.
3. Positions of targets and Sun
   It is prohibited to move the antenna within 25 degree from Sun. Please check the positions of targets and Sun with [nsolview] .
4. Wind speed
   Please stop observations immediately when the wind speed exceeds 20 m/s. Note that pointing accuracy decreases when the wind speed exceeds 10 m/s.
5. Status of pointing correction system
   During observations, please confirm that the pointing correction system works properly:
   
   1. three clocks on [asp-mon] are consistent within a minute
   2. two statuses are OK
6. Snow
   When snow, pleas stop observations immediately and set the antenna at AZ=180 and EL=10. You can check the condition at site with [webcam] . Observations have to be stopped unless staffs at site confirm the safety.
7. Temperature of cabin room and spectrometers
   When the temperature of room exceeds 25 degree or the temperature of spectrometers exceeds 30 degree, the spectrometers are at risk of break down. Please stop observations until the temperature decreases. The temperatures are displayed on [envmon] .

Finishing observations

End procedure of observations

1. Set the antenna at its home position (AZ = 180, EL = 60) and STBY mode.
2. Release all the priorities, and confirm that they are actually released with [pget] command.
3. Finish webcam.
4. Send e-mail to aste-unyo ML.

When the next observer is at a different observing site:

1. Finish webcam.
2. If you are observing at Nobeyama and the next observer is at Mitaka, please stop COSMOS.
3. Contact to the next observer by phone (not by e-mail or fax).
   • Mitaka: 0422-34-3924
   • Nobeyama: 0267-98-4307