Changes between Version 6 and Version 7 of docs/CommissioningPlan/P3.17


Ignore:
Timestamp:
03/03/23 14:11:19 (21 months ago)
Author:
dvassall
Comment:

DV: updated the procedure

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  • docs/CommissioningPlan/P3.17

    v6 v7  
    1 == P3.17 Orient the coronagraphs ==
     1== P3.17 Orient the apodizers ==
    22 
    33- **Phase**             :       3 
    44- **Status**            :       Draft   
    55- **Category**  :       Nighttime testing (functionality and operability) (C5) + Nighttime calibration (C6)
    6 - **Recurrence**        :       before every observing target (CI, LSS), starting from commissioning.
     6- **Recurrence**        :       before every observing target (CI, eventually LSS?), starting from commissioning.
    77- **Duration**  :       4 hours
    88
    99**Description**
    10 - Adjust the orientation of the coronagraphic masks with respect to the true orientation of the M2 spider by rotating the SHARK-NIR derotator.
     10- Adjust the orientation of the Shaped Pupil apodizers with respect to the true orientation of the M2 spider by rotating the SHARK-NIR derotator.
    1111
    1212**Prerequisites**
    … …  
    1616
    1717**Procedure**
    18 - Pointing to a star, the first coronagraph is inserted in the path. The bearing is rotated, maximizing the contrast achieved on the SCICAM. (use the pupil lens to see the pupil's alignment, maybe)?
    19 - This operation is repeated for all the coronagraphs.
     18- Insert the first apodizer in the path and measure its orientation on SCICAM illuminating it with the internal fiber. Then point a star, remove the apodizer and measure the orientation of the M2 spider on SCICAM. Rotate the bearing by the delta between the two orientations. Iterarate, if necessary, until delta is below 0.5deg.
     19- This operation is repeated for the other two apodizers.
    2020
    2121**Templates**
    … …  
    2323
    2424**Success criteria**
    25 - All the coronagraphs are aligned to the true orientation of the M2 spider by maximizing the contrast at SCICAM.
     25- All the coronagraphs are aligned to the true orientation of the M2 spider by minimizing the differential orientation on SCICAM.
    2626- Note down the contrast achieved for all the coronagraphs, including the atmospheric conditions and the brightness of the on-axis star.
    2727