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--- public:observer:kuiper_61_telescope_checklist_for_basic_certification [2019/12/05 10:20]
mel
+++ public:observer:kuiper_61_telescope_checklist_for_basic_certification [2020/02/27 12:29] (current)
mel
@@ Line 32: / Line 32: @@
   * How to use the software on Gerard properly (dataserver, galilserver fw-gui, IRAF, ds9)
   * Leave Azcam running at the end of the night/run unless going into lightning shutdown.  This helps camera remain stable.  If program is closed, it may mess up data quality for next observer.
-  * LN2 how to fill
-  * LN2/gaseous N2 pressurize
-  * LN2 tank swap procedure – at a minimum review
-  * **Stress proper PPE use! Recommend wearing long pants and closed toed shoes whenever observing**
   * Have trainee actually get everything up and running, find focus etc.
-  * For the M4K, the dewar MUST be filled every 24hrs.  NO EXCEPTIONS.
+  * **Dewar filling**
-  * Warning!!! LN2 can spill out of camera dewar after filling!
+    * LN2 how to fill, use static discharge strap whenever touching the dewar, touch metal fill tube to the outside of the fill port before inserting, etc
+    * LN2/gaseous N2 pressurize
+    * LN2 tank swap procedure – at a minimum review
+    * **[[.:Stress proper PPE use]]! Wear long pants and closed toed shoes whenever observing. You must wear cryo gloves, goggles AND a face shield when handling liquid nitrogen.  Long sleeves must also be worn; we have provided lab coats if you don't have long sleeves**
+    * For the M4K, the dewar MUST be filled every 24hrs.  NO EXCEPTIONS.
+    * If a camera has gone longer than 24 hours, call a staff member.  Sometimes the M4K is warming up deliberately, so always call if you find it over 24 hours between fills.
+      * The staff member will probably ask you first if the scope is in lightning shutdown, if not they'll want you to check the cam temp on Azcam. **NEVER FILL THE DEWAR ABOVE -40C**
+      * If the telescope is in lightning shutdown, they will ask you to check if the fill port is outgassing.  Sometimes it is not readily apparent, so you will need to put your thumb over the fill port for 10 seconds and remove it to see if a spurt of gas comes out.  They will also ask if the outside of the dewar is sweating. It will look like condensation on the outside of iced water.  From this point on, the staff member will guide you as to what to do next.
+      * Warning!!! LN2 can spill out of camera dewar after filling!
 ====Telescope Operations General Items:====

MOON

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