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This page defines the different types of operational constraints due to weather.
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For a full study of wind on image quality, refer to SIT-Com `TN-126`_.
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Operating conditions used to define the Rubin construction project are found
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in `LTS-54 <https://ls.st/lts-54>`__.
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@@ -63,7 +67,8 @@ e.g. opening before going to dinner, or leaving the control room to complete ano
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.. warning::
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Vent gates:
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The vent gates on the first floor of the AuxTel dome can add turbulence if winds are high.
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Close the vent gates if wind speeds are above 8 m/s.
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Close the vent gates if wind speeds are above 10 m/s.
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This value is less than they can physically stand, but this avoids cross talk in the dome.
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.. note::
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- This is safe operation range for AuxTel.
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No restrictions in observing are needed.
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Wind speeds between 8 and 12 m/s (measured over the last 10 data points):
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Wind speeds between 8 and 15 m/s (measured over the last 10 data points):
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- If the observer has control to choose targets, observe out of the wind.
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Report that the scheduler configuration needs to be changed, or change the scheduler program you are running.
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Skip over any observing blocks that point the telescope directly into, or 180 degrees opposite, of the dominant direction of the wind.
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Skip over any observing blocks that point the telescope directly into, or 90 degrees offset from, the dominant direction of the wind.
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- Close the vent gate(s) at winds over 12 m/s.
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.. note::
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90 degree rule:
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Due to the curved dome, pointing at targets 180 degrees offset from the dominant wind direction creates a wind eddy under the lip of the dome, which can create wind shake on the upper truss of AuxTel.
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To compensate for this, it is recommended to look for targets that have a 90-degree offset from the dominant wind direction.
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Opposite rule:
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The optimum place to point when there are winds over 8 m/s is 180 degrees offset from the dominant wind direction.
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Wind speeds greater than 12 m/s (measured over the last 10 data points):
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- Observers should close once wind gusts have become greater than 12 m/s.
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Wind speeds greater than 15 m/s (measured over the last 10 data points):
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- Observers should close once wind gusts have become greater than 15 m/s.
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If mount jitter is occurring frequently in all parts of the sky, close the dome.
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Before deciding to open again, ensure that sustained winds have dropped below the closure limits for more than 15 minutes.
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Reset the timer if the wind jumps over 12 m/s again.
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Reset the timer if the wind jumps over 15 m/s again.
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.. warning::
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Dome drop-down shutter:
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The AuxTel dome shutter has a drop-down shutter that opens like a flap, causing it to extend further past the dome structure.
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It is opened when observing targets below 25-30 degrees elevation.
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It is opened when observing targets below 25 degrees elevation.
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The drop-down shutter is susceptible to wind gusts, and should be closed if gusts reach over 8 m/s.
The quantity that is more important than relative humidity is the **dew point temperature** and the **dew point difference**.
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The dew point temperature is the ambient air temperature at which relative humidity will reach 100% -
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the air is completely saturated with water vapor.
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You can calculate the **dew point temperature** using this `online tool`_.
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The dew point difference is the difference between the dew point temperature and the coldest structure in the telescope dome.
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Example:
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Dew point temperature = 8 degrees C.
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AuxTel M1 temperature = 11 degrees C.
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Glycol lines = 4 degrees C.
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Truss temperature = 4 degrees C.
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**Dew point difference = 4 degrees C.**
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@@ -197,6 +205,9 @@ Winds can bring this moisture into the dome, or it can condense on the dome roof
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If clouds are present in the all-sky camera - which is mounted next to Earthcam on Piñon - be mindful of further cloud accumulation and the direction they are coming from.
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Aggregate data by going outside and looking around the sky.
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During bright time, look along the glowing cloud edges for wisps.
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The `Gemini cloud cameras`_ are useful to evaluate how low the clouds are.
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Cloud camera images update every 30 seconds during the night.
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The Gemini cloud cameras begin exposing when the sun is ~6 degrees below horizon.
Copy file name to clipboardExpand all lines: Safety/emergency-response-guide.rst
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.. Recommended format for all labels is "Title Name"-"Section Name" -- Spaces should be replaced by hyphens.
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.. To reference a label that isn't associated with an reST object such as a title or figure, you must include the link an explicit title using the syntax :ref:`link text <label-name>`.
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.. An error will alert you of identical labels during the build process.
@@ -30,6 +33,8 @@ This is a basic emergency response guide organized by the type of emergency.
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- This does not replace safety training required to be on the summit.
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- A full copy of the emergency procedures and evacuation routes are found here in `English`_ (starting on slide 19) and here in `Spanish`_ (starting on slide 19).
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- It is recommended to contact the safety team to complete summit driver's training in addition to the required summit training.
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.. note::
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Medical Emergency
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=================
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Contact the PolyClinic (the Paramedic on summit) at extension 577
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Contact the **PolyClinic** (the Paramedic on summit) at **extension 577**.
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.. note::
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If no one answers the telephone, use any Rubin radio tuned to Channel 1. Put out the call:
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.. important::
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If no one answers the telephone, use any Rubin radio tuned to Channel 1.
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Put out the call:
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- "Atento paramedico, habla [your name]."
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Wait for a response.
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If there is no response on the radio, call 440 to the Mountain Assistant.
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*"Atento paramedico, habla [your name]."*
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Wait for a response.
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If there is no response on the radio, call 440 to the Mountain Assistant.
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Describe the emergency:
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- Your name
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My name is [your name].
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- "Me llamo [your name]."
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- *"Me llamo [your name]."*
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- Your location
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We are in [AuxTel/Main Building] [floor 1, 2, 3, ..].
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- "Estamos en el [telescopio auxilliar/edificio principal] de Rubin, en el piso [uno, dos, tres, ...]."
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- *"Estamos en el [telescopio auxiliar/edificio principal] de Rubin, en el piso [uno, dos, tres, ...]."*
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- How many people are injured
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There are [two, three, ...] people injured.
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- "Hay [dos, tres ...] personas heridas."
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- *"Hay [dos, tres ...] personas heridas."*
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- Name any hazardous conditions present IF you can identify them.
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Speak only to the details you know.
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- Wait for instructions
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- Wait for instructions.
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.. _emergency-response-guide-inclement-weather:
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Inclement weather
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=================
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- In the event of precipitation (rain or snowfall), close both domes (if open) and prepare to evacuate the summit.
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- If Summit or NOIRLab Operations have ordered a summit evacuation, prepare to go down on the provided transportation or join a group evacuating in a summit vehicle.
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- If precipitation arrives after hours, shut down operations quickly.
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- Put an announcement on `#summit-announce`_ and call on radio channel 3 and 5 to announce to any on site personnel that the summit is being evacuated.
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- Gather everyone in the shared vehicles and drive slowly down to Hotel Pachón.
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.. _emergency-response-guide-fire:
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Fire
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====
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- If you that someone else is in the building, but not currently with you, use a Rubin radio tuned to Channel 3.
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Attention Rubin Personnel, FIRE!
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Evacuate the building!
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"Atento a todo personal, HAY INCENDIO!
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Salgan del edificio!"
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- Give everyone you encounter directions to meet at the emergency assembly point in the first level parking lot.
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If you detect smoke or fire:
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- Pull a fire alarm if possible.
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- Use a fire extinguisher if you are trained to do so.
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- Call the Mountain Assistant at extension 440:
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- If they do not answer, call Control Puerta at extension 434.
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- Put out a call for help on any Rubin radio tuned to Channel 1.
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- Take a Rubin radio. Announce on Channel 3.
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Attention Rubin Personnel, FIRE! Evacuate the building!
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- *"Atento a todo personal, HAY INCENDIO! Salgan del edificio!"*
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- Use a fire extinguisher if you are trained to do so.
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- If an emergency leader is identified, follow their instructions to evacuate.
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Give everyone you encounter directions to meet at the emergency assembly point in the first level parking lot.
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- Remain low to the ground if you encounter smoke.
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- Leave all belongings behind.
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- Take the stairs, not the elevators.
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- Pull a fire alarm if possible.
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- Once outside, alert the Mountain Assistant at extension 440:
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- If they do not answer, call Control Puerta at extension 434.
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- Put out a call for help on any Rubin radio tuned to Channel 1.
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.. _emergency-response-guide-earthquake:
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- Use the Rubin radio on channel 3 to alert other personnel in the building to meet at the safety point.
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- Call the Mountain Assistant at extension 440.
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- If the earthquake is severe and someone is injured, call the Mountain Assistant on radio channel 1.
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- If they don't respond, call Control Puerta at 434.
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- If no one answers the phone, use any Rubin radio tuned to Channel 1 to put out the call.
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- Wait for instructions in the emergency assembly point.
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- Provide as many details about the emergency as you can, MOST IMPORTANTLY THE LOCATION.
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