| 15 | | === twilights with VIRUS with different tracker positions === |
| 16 | | |
| 17 | | Purpose: There is some interest in seeing what the long term illumination correction changes look like including what different track positions do to them. The script is "specialtwilight" in /home/mcs/astronomer/bin/. It takes a single argument which is the Observation number. |
| 18 | | |
| 19 | | Procedure: |
| 20 | | * Despite of pressures at the start of the night try to get the twilights. |
| 21 | | * Setup the guide camera for sky twilight (GC2, 0.1 sec, B filter) |
| 22 | | * When you hit the correct flux level (biased to a slight higher value, perhaps 5k) execute the specialtwilight script |
| 23 | | |
| 24 | | |
| 25 | | version of shuffle installed so we are ready to resume testing of non-optimal Az setups. |
| 26 | | * Sergey has fixed the auto numbering in cal and vlexp |
| 27 | | * pivot on VIRUS now runs vhc automatically. |
| 28 | | |
| 29 | | == Twilight Tests == |
| 30 | | |
| 31 | | Note: Twilight exposures are critical science calibrations for LRS and VIRUS and if possible should be done every night that science data is taken. |
| 32 | | |
| 33 | | === twilights with VIRUS with different tracker positions === |
| 34 | | |
| 35 | | Purpose: There is some interest in seeing what the long term illumination correction changes look like including what different track positions do to them. The script is "specialtwilight" in /home/mcs/astronomer/bin/. It takes a single argument which is the Observation number. |
| 36 | | |
| 37 | | Procedure: |
| 38 | | * Despite of pressures at the start of the night try to get the twilights. |
| 39 | | * Setup the guide camera for sky twilight (GC2, 0.1 sec, B filter) |
| 40 | | * When you hit the correct flux level (biased to a slight higher value, perhaps 5k) execute the specialtwilight script |
